what is the role of detergent, ethanol, and salt in the extraction process?

Answers

Answer 1

The components of the DNA extraction buffer serve the following purposes:

(1) the soap aids in dissolving the phospholipid bilayers that surround the organelles and cell membrane;

2) the salt is used to disrupt protein chains that bind to the nucleic acids;  

(3) the ethanol is used to precipitate the DNA.

Cell membranes and other barriers that might prevent the desired molecules from being extracted can be dismantled by detergent. By forming micelles, it can also aid in the solubilization of hydrophobic molecules.

Polar and non-polar compounds can be extracted using ethanol as a solvent. By destroying the hydrogen bonds and hydrophobic interactions between molecules, it can also be used to precipitate specific molecules, such as nucleic acids.

In addition to increasing some molecules' solubility, salt can be used to break up hydrogen bonds and hydrophobic interactions between molecules.

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Related Questions

which stimulus would optimally activate an on-center ganglion cell?

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A spot of light in the centre of the receptive field would optimally activate on-centre ganglion cell.

Ganglion cells are the characteristic structure of human retina. They are generally of two types- ON ganglion cells and OFF ganglion cells. ON ganglion cells get depolarized by illumination of a spot light at their receptive field centre, or RFC. While, decrease in this illumination causes depolarization of OFF-ganglion cells.

This illumination is a kind of excitatory input received from cone bipolar cells present in the human eye. Bipolar cells and amacrine cells provide information about the visual world to ganglion cells (retinal interneurons). Chemical messages are sensed by receptors on the membrane of ganglion cells to provide this information.

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The organelles and the watery component of the cell together is called the___________

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The term "cytoplasm" refers to both the mitochondria and the fluid portion of the cell in B. The watery liquid known as cytosol makes up cytoplasm.

What is cytoplasm, and what does it do?

Cytoplasm. The gel-like substance that fills a cell is called cytoplasm. It serves as a catalyst for chemical reactions. It offers a foundation for other organelles to function within the cell. A cell's cytoplasm is where all of the processes for cell division, growth, and replication take place.

Describe cytoplasm in simple terms.

The viscous liquid that makes up a cell's interior is called cytoplasm. It is made up of different organic compounds, salts, and water. The cytoplasm is kept apart from some internal organelles, like the mitochondria and the nucleus by membranes.

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The struggle among producers for the dollars of consumers; the rivalry among sellers to attract customers while lowering costs.

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Producers competing with one another for customer cash Profit Motive is the competition between vendors to draw clients while cutting expenses.

What effects do a strong dollar and a weak dollar have on exports and imports, respectively?

While a strong home currency hinders exports and raises the cost of imports, a weak domestic currency encourages exports and lowers the cost of imports. By directly affecting input prices like materials and labor, higher inflation can also negatively affect exports.

What is rivalry between competitors?

The level of rivalry between existing businesses is a measure of that level of competitiveness. Competitors may reduce prices, spend more on advertising, or invest in service/product innovation and improvements if there is fierce competition, which can reduce profitability.

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The blood vessel which carries oxygenated blood from the lungs to the heart is :
(a) main artery
(b) pulmonary artery
(c) main vein
(d) pulmonary vein

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The correct option is B ;  Pulmonary artery , The pulmonary vein is a blood channel that transports blood from the lungs to the heart. There are four pulmonary veins, two from each lung, that drain into the heart's left atrium.

Pulmonary artery are in charge of transporting oxygenated blood from the lungs to the left atrium of the heart. This distinguishes the pulmonary veins from other veins in the body that convey deoxygenated blood from the rest of the body back to the heart.

As a result, 'Pulmonary artery ' is the right answer. Your pulmonary trunk is made up of one primary pulmonary artery. At your pulmonary valve, this artery attaches straight to your heart. This is the "door" that regulates the flow of blood out of your lower right heart chamber (right).

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Which molecule did Carl Woese study to produce his tree of life?
a) ribosomal RNA
b) DNA
c) Messenger RNA
d) Ribosome

Answers

The chemical utilized to create Woese's phylogeny was ribosomal RNA since it changes slowly and is essential to the ribosome's function, which is the same across all three domains of the tree of life (option a).

What distinguishes a molecule from an atom?

Individually neutral particles make up an atom. The bonding of two or more atoms forms molecules, which are neutral entities. An ion is a particle that is positively or negatively charged.

What distinguishes a molecule from a compound?

A group of two or more atoms joined together by chemical bonds is known as a molecule. A compound is something that is made up of two or more different kinds of components that are chemically combined in a specific ratio. Not all molecules are substances.

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True/false? peregrine falcons are known for their maneuvering ability. in a tight circular turn, a falcon can attain a centripetal acceleration 1.5 times the free-fall acceleration.

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The peregrine falcons are known for their maneuvering ability. In a tight circular turn, a falcon can attain a centripetal acceleration 1.5 times the free-fall acceleration. This statement is true.

The acceleration of a body traveling in a circular path is known as centripetal acceleration. As velocity is a vector quantity and hence has both a magnitude and a direction. When a body moves on a circular path, its direction changes constantly, causing its velocity to vary, resulting in acceleration. The peregrine falcon belongs to the family of prey and is well known for their hunting abilities. They are non-migratory birds found predominantly in the Indian subcontinent. They are well known for their maneuvering ability. It can attain a very high centripetal acceleration in a sharp circular turn. The centripetal acceleration can be as high as 1.5 times the value of acceleration in a free fall.

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Enzymes of Carbohydrate Digestion Click to select the parts of the digestive system that produce enzymes to digest carbohydrates. Large intestine Esophagus Small intestine Mouth Pancreas Stomach Liver Gallbladder

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A lengthy, twisted tube connects the several hollow organs that make up the GI tract, and extends from the anus.The stomach, alimentary canal, large intestine, and anus are hollow structures that make it up the GI tract.

The 13 parts of the digestive tract are arranged in what order?

The alimentary system includes the mouths, pharynx, esophagus, stomachs, small and large intestines, rectum, & anus.Among the auxiliary organs associated to the intestinal system are the pancreas, liver, gallbladder, and saliva.

What parts of the digestive system are there?

Its mouth, throat, stomach, small bowel, large intestine, rectum, and anus are the key organs that make up a digestive tract (in order by their function).The pancreas, gall bladder, and liver support them in their endeavors.

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Which of the following forces contribute to the stability of a DNA double helix?A. hydrophobic interactions of bases in the same strand.B. hydrogen bonding between bases in opposite strands.C. hydrophobic interactions of bases in the same strand and hydrogen bonding between bases in opposite strands.D. ionic interactions between the positively charged component of one base and the negatively charged component of the neighboring base.E. hydrophobic interactions of bases in the same strand, hydrogen bonding between bases in opposite strands, and ionic interactions between the positively charged component of one base and the negatively charged component of the neighboring base.

Answers

Therefore, all of the options given in the question contribute to the stability of the DNA double helix.

What is DNA?

DNA (Deoxyribonucleic Acid) is a long, double-stranded, helical molecule that carries genetic information in almost all living organisms. It is a polymer made up of repeating units called nucleotides, which are composed of a sugar molecule (deoxyribose), a phosphate group, and a nitrogenous base. The four nitrogenous bases found in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G).
Here,

The stability of DNA double helix is maintained by multiple forces. Hydrophobic interactions of bases in the same strand can contribute to the stability by ensuring that the hydrophobic bases are sequestered from the aqueous environment. Hydrogen bonding between complementary base pairs in opposite strands is a key stabilizing force that holds the two strands together.

In addition, ionic interactions between the positively charged component of one base and the negatively charged component of the neighboring base also contribute to the stability of the double helix.

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Water is able to carry nutrients into and waste out of cells because

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Water is able to carry nutrients into and waste out of cells because this element can act as a solvent and thus incorporate solutes.

Why water molecules are essential for life?

Water molecules are essential for life because this element has a series of features that allow it to carry out metabolic functions such as growth, differentiation, etc, one of them is associated with its ability to act as a solvent.

Therefore, with this data, we can see that water molecules are essential for life because they are able to dissolve solutes.

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a 5% urea solution is hypotonic to a 10% urea solution.truefalse

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It is TRUE that 5% urea solution is hypotonic to it due to the fact that 10% urea solution is more concentrated.

Urea molecules, a solute, are present in lower concentrations per unit volume in a hypotonic solution than in a normotonic solution. Water molecules will try to move from the hypotonic solution, which has a lower solute concentration, to the hypertonic solution, which has a higher solute concentration, in an effort to balance the solute concentration on both sides of the membrane when a semipermeable membrane separates two solutions with different solute concentrations.

Because the 10% urea solution contains more urea molecules than the 5% urea solution in this situation, it is more hypertonic than the 5% urea solution. To balance the concentration of urea molecules on both sides of the membrane, water molecules would have a tendency to flow from the 10% hypertonic solution into the 5% hypotonic solution.

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A zebra migrates to join a different herd of zebras.

Competition for sunlight leads to taller trees.

The DNA of a snake changes to make its venom stronger.

A grassfire randomly sweeps through a population of buffalo and kills most of the animals.

Answers

The resulting effect on the gene pool would be the following:

A zebra migrates to join a different herd of zebras.; brings new alleles from other populationsCompetition for sunlight leads to taller trees.: favors certain allelesThe DNA of a snake changes to make its venom stronger:creates new alleles from DNAA grassfire randomly sweeps through a population of buffalo and kills most of the animals: randomly selects alleles

What is an allele?

An allele is a variant form of a gene that can exist at the same locus (position) on a chromosome. Genes control the traits we inherit from our parents, and alleles are responsible for the differences in those traits.

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Read each example and decide what the resulting effect on the gene pool of that population would be.

A zebra migrates to join a different herd of zebras.

Competition for sunlight leads to taller trees.

The DNA of a snake changes to make its venom stronger.

A grassfire randomly sweeps through a population of buffalo

and kills most of the animals.

Answer:The resulting effect on the gene pool would be the following:

A zebra migrates to join a different herd of zebras.; brings new alleles from other populations

Competition for sunlight leads to taller trees.: favors certain alleles

The DNA of a snake changes to make its venom stronger:creates new alleles from DNA

A grassfire randomly sweeps through a population of buffalo and kills most of the animals: randomly selects alleles

Explanation:

What are the three components of nature notes

Answers

Answer:

The three components of nature are in the following -

lithosphere, atmosphere, and hydrosphere.

Explanation:

What are components of nature?

Components are elements that make up the environment.

Are the components of nature important?

Yes the components of nature is important reason being everything we see, touch, eat and hear all of that comes from nature.

So, thus components of nature are things that make up the environment and their very important to have and keep.

mention all of the body planes and sections

Answers

There are three primary planes and several corresponding sections used to describe the human body's anatomical positions Sagittal plane, Midsagittal, Parasagittal section, Frontal section, and Transverse plane.

Sagittal plane: This plane runs longitudinally from front to back, dividing the body into left and right halves. The corresponding sections include:

Midsagittal (or median) section: The plane that divides the body into equal left and right halves.

Parasagittal section: Any plane that runs parallel to the midsagittal plane, but not through the midline.

Frontal (or coronal) plane: This plane runs longitudinally from side to side, dividing the body into front and back portions. The corresponding sections include:

Frontal section: Any plane that runs perpendicular to the sagittal plane and divides the body into front and back portions.

Transverse (or horizontal) plane: This plane runs horizontally, dividing the body into top and bottom portions. The corresponding section is called the transverse section, or cross-section.

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The volume of blood that leaves the _____________ must be close to the volume that returns.
capillary
pressure
hydrostatic pressure
arteriolar
plasma proteins
colloidal osmotic pressure
venular

Answers

The amount of blood that exits the capillary and the amount that returns must be comparable. Option a)

What is arteriolar blood flow?

Red blood cells, also known as arteries, carry oxygen and vitamins from the heart to the tissues of your body. The oxygen-poor blood is returned to the heart through the veins (blue). The primary artery that exits the heart, the aorta, that's where arteries are created. They transport oxygen-rich blood from the blood to all the tissues in the body.

What are arterioles used for?

As the primary location of total peripheral resistance, arterioles play a role in maintaining the average arterial pressure for tissue perfusion. They also contribute significantly to the regulation of blood circulation in an organ- or tissue-specific way by altering the diameter.

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A gaseous decay product of uranium that is found in rocks (A) Radon (B) Mercury (C) Lead (D) Copper (E)Iron

Answers

A gaseous decay product that is found in rocks is Radon. Option A.

About Radon

Radon is a radioactive gas that is produced by the decay of uranium in rocks and soil. It is a colorless and odorless gas that can accumulate in buildings, especially in areas with poor ventilation.

Radon exposure has been linked to lung cancer, and it is estimated to be responsible for thousands of deaths each year.

Testing for radon levels in homes and taking measures to reduce exposure can help prevent health risks associated with this gas.

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what is the process by which the coded dna information for making a protein is copied into rna?

Answers

The process by which the coded DNA information for making a protein is copied into RNA is called transcription.

What do you understand by the term transcription?

The process of copying a segment of DNA in RNA is called as the transcription. Segments of DNA transcribed into RNA molecules that can encode proteins are said to produce messenger RNA and other segments of DNA are copied into RNA molecules called non-coding RNAs. mRNA comprises of only 1–3% of total RNA samples.

Process by which DNA is copied to RNA is called transcription, whereas by which RNA is used to produce proteins is called translation.

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what is definition of sarc/o in medical term?

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Sarco- is a combining form that is used as a prefix to denote "flesh." It's frequently utilized in medicine and biology.

If you have recently been raped or sexually attacked, you can seek medical and practical assistance from a Sexual Assault Referral Centre (SARC). A Sexual Assault Referral Centre (SARC) can provide those who have recently been raped or sexually abused with confidential medical and practical support.

When describing structures and organelles connected with muscle, the prefixes myo- and sarco- (from Latin and Greek, respectively, both meaning muscle) might be confusing. As a result, the plasma membrane of muscle cells is sometimes referred to as the sarcolemma, and their cytoplasm as sarcoplasm.

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What are the 7 major body cavities?

Answers

Answer:

Terms in this set (7)

dorsal cavity. body cavity that houses the skull, brain, and spinal cavity.

ventral cavity. this body cavity is divided into three parts; the thorax, abdomen, and pelvis.

thoracic cavity. body cavity that contains the heart and lungs.

abdominal cavity.

pelvic cavity.

abdominopelvic cavity.

body cavity.

Given a homozygous hybrid plant for Tall (T) crosses with a hybrid plant what is the predicted number of offspring that will be short? 0/4; 1/4; 2/4; 3/4; 4/4

Answers

A homozygous hybrid plant for Tall (T) crosses with a hybrid plant, so the predicted number of offspring that will be short is 0/4. Therefore, the correct option is A.

What is the law of dominance?

It is the first law of Mendel, which states that, if two inherited alleles are heterozygous, the dominant allele will be expressed whereas the recessive allele will not express itself.

Factors are the distinct unit through which every character is controlled. The dominant allele would be able to show its phenotype in the F1 generation, while the recessive allele would not be able to show.

The cross given in this question is shown below in the image. Therefore, we can see that when a homozygous hybrid plant for Tall (T) crosses with  heterozygous a hybrid plant, zero number of offspring will be short.

                                        Phenotypic ratio- 0:4

                                        Genotypic ratio- 2:2

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a pathogen passes from one organism to another via the chain of infection. true or false?

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Pathogens can be shared in a couple of ways relying upon the sort. They can be laid via skin contact, natural liquids, airborne particles, touch with excretion, and contacting a surface got by a contaminated individual. The answer is True.

Regardless of the Pathogens, there are six points where the chain can be broken and a microbe can be halted from contaminating someone else. The six connections include the irresistible specialist, repository, gateway of leave, method of transmission, the entryway of the section, and defenseless host.

Microbes are microorganisms that cause infection. Without microorganisms, we wouldn't have a contagious, irresistible infection.

This portrays how microorganisms are communicated starting with one individual or spot and then onto the next. This could be by means of somebody's hands, on an article, through the air, or through natural liquid contact.

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the most important primary producers in marine ecosystems are _____.
a. euglenids b. dinoflagellates c. diatoms d. seaweeds

Answers

The most important primary producers in marine ecosystems are generally considered to be microscopic algae, including diatoms and dinoflagellates. Here options B and C are the correct answer.

These algae are responsible for producing much of the organic matter that forms the base of the marine food web, providing a vital source of nutrition for many aquatic organisms.

Diatoms are single-celled algae that are enclosed in a unique glass-like shell made of silica. They are highly diverse and found in a wide range of marine environments, from polar to tropical waters. Dinoflagellates are also single-celled algae, and they are known for their ability to produce bioluminescence and create harmful algal blooms.

Other types of primary producers in marine ecosystems include seaweeds, also known as macroalgae, which are multicellular and often visible to the eye. Seaweeds come in many different colors and forms and provide important habitats for a wide variety of marine organisms.

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what is the name of the microscopic filtering units inside the kidney?

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Nephrons are little filtering organs that help the kidneys eliminate urea from the blood. A ball made of tiny blood capillaries called a glomerulus and a tiny tube known as a renal tubule make up each nephron.

Where are the kidneys hurting?

You have discomfort in the region where your kidneys are located: On either side of your spine, directly below your ribs, close to the centre of your back. The urinary tract contains your kidneys.

How can you tell if there is a problem with your kidneys?

It may indicate kidney illness if you feel the need to urinate more frequently, especially at night. The need to urinate may become more intense when the kidney filters are compromised.

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the production of multiple copies of a single gene is called

Answers

Answer: Gene Cloning / Gene Duplication

Explanation:

Arrange the following terms into the order in which a compound must pass through to move from plasma to CSF?

Answers

endothelium of capillaries,exteriorized cells,pericyte,astrocyte. They are connected in the middle by a band of nerve fibres cellular called the corpus callosum, which enables them to communicate.

The dorsal (posterior) root is where afferent (sensory) fibres enter the spinal cord, while the ventral (anterior) root is where efferent (motor) fibres leave the spinal cord. The dorsal and ventral roots come together to produce the spinal nerve. The spinal cord and brain are encased in three layers known as the meninges.  Hemispheres are the terms for the cerebrum's two halves. endothelium of capillaries,exteriorized cells,pericyte,astrocyte. They are connected in the middle by a band of nerve fibres cellular called the corpus callosum, which enables them to communicate. They are connected in the middle by a band of nerve fibres called the corpus callosum, which enables them to communicate. These are brought there by a blood clot or plaque fragment that forms in another part of the body and moves via the bloodstream to one of the blood arteries in the brain.

(Arrange the following terms into the order in which a compound must pass through to move from plasma to CSF.

-capillary endothelium

-pericyte

-astrocyte

-extracellular matrix)

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The largest quantities of keratin are found in the epidermal layer called the stratum
A. granulosum.
B. basale.
C. lucidum.
D. spinosum.
E. corneum.

Answers

The epidermis' outermost layer is called the stratum corneum (skin). It mostly consists of keratin and lipids. The lower epidermal layers' visible cells shed and are then replaced. The stratum corneum's cells cycle every two weeks.

What layer of the epidermis contains the most keratin?

The majority of the structure of the skin, nails, and hair is made up of the protein keratin, which is produced by keratinocytes. The transfer of specific chemicals into and out of the body occurs through the thickest layer of squamous cells in the epidermis.

What layer of the body makes keratin?

Keratinocytes that have reached the stage of maturity where they are starting to create the massive amounts of keratin that will eventually fill the cells make up the stratum granulosum.

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Cellular respiration produces ______ from ________. Organic molecules are a source of ______ energy that cellular respiration transfers into _____ and transforms into _____.

Answers

Carbon dioxide and water; organic molecules and oxygen; chemical potential; usable chemical energy in the form of ATP; heat energy that cannot do work

Cellular respiration produces carbon dioxide and water from organic molecules and oxygen; organic molecules are a source of chemical potential energy that cellular respiration transfers into usable chemical energy in the form of ATP and transforms into heat energy that cannot do work.

Cellular respiration is a process that takes place in the mitochondria in living organisms cells. It is the powerhouse of a cell.

The process involves the break down of organic molecules such as glucose, in presence of oxygen, to generate energy in the form of ATP, which is the usable form of energy by the cells to drive processes such as transport, growth and development, etc.

The process converts chemical potential energy in organic compounds to usable chemical energy in the form of ATP. Carbon dioxide and water are also produced as by-products during the process.

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Full Question : Cellular respiration produces ______ from ________. organic molecules are a source of ______ energy that cellular respiration transfers into _____ and transforms into _____. carbon dioxide and water; oxygen and sunlight; kinetic; usable chemical energy in the form of glucose; heat energy that the cell can use to do work carbon dioxide and water; organic molecules and oxygen; chemical potential; usable chemical energy in the form of atp; heat energy that cannot do work glucose and oxygen; carbon dioxide and water; chemical potential; usable chemical energy in the form of atp; heat energy that cannot do work

Which stage is NOT associated with hemimetabolous metamorphosis a) Nymph b) Pupae c) Egg d) Naiad

Answers

Pupae is the stage that is not connected to hemi-metabolous transformation.

What types of organisms are Hemimetabola?

There is no pupal stage. The nymphs, sometimes known as naiads, gradually change into adults. Many insects, including grasshoppers, praying mantises, mayflies, damselflies, and others, are hemimetabolous. In this location, the nymphs eventually grow adult mouthparts, legs, antennae, and appendages.

Nymphs are they hemimetabolous?

The nymphal stage of hemimetabolous insects is similar to the adult stage, with the exception that the final moult is when wings and genitalia are gained. In holometaboly, or complete metamorphosis, the larval stages can take on a very different shape from the adult.

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the two organelles involved with energy conversions in a plant cell are the

Answers

Mitochondria and chloroplasts: Energy Conversion - Molecular Biology of the Cell - NCBI Bookshelf.

What organelles are involved in the conversion of energy?

The mitochondria, which are membrane-bound cell organelles, generate the majority of the chemical energy needed to power a cell's metabolic processes (mitochondrion, singular). The small molecule adenosine triphosphate serves as a reservoir for the chemical energy produced by the mitochondria (ATP)

What cells do plants employ as energy sources?

In particular, organelles called chloroplasts enable plants to store solar energy in molecules with high energy, while cell walls enable plants to have a variety of hard structures, such as woody trunks and flexible leaves, and vacuoles enable plant cells to enlarge and contract.

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What is the inferior aspect of the skull?

Answers

The inferior aspect of the skull refers to the underside of the cranium or skull. It is composed of several bony structures that form the base of the skull and provide support for the brain, as well as openings for important nerves and blood vessels.

Some of the bony structures that make up the inferior aspect of the skull include the following:

Occipital bone: The occipital bone forms the posterior aspect of the skull and contains the foramen magnum, which is the opening through which the spinal cord passes.

Temporal bone: The temporal bone is located on the lateral aspect of the skull and contains several openings for nerves and blood vessels, including the internal auditory meatus, which transmits the facial and vestibulocochlear nerves.

Sphenoid bone: The sphenoid bone is a complex structure located at the base of the skull, which contains several foramina that transmit important nerves and blood vessels, including the optic nerve and the internal carotid artery.

Ethmoid bone: The ethmoid bone is located in the anterior part of the skull, and forms part of the nasal cavity as well as the orbit (eye socket).

Overall, the inferior aspect of the skull is an important and complex region that is crucial for the proper functioning of the brain and the rest of the body.

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why are archaea considered a monophyletic group according to the three-domain hypothesis?

Answers

Аrchаeа considered а monophyletic group аccording to the three-domаin hypothesis becаuse this group includes аn аncestrаl populаtion аnd аll of its descendаnts.

The three domаin tree gives three domаins becаuse eаch of bаcteriа, аrchаeа, аnd eukаryotа form mutuаlly exclusive monophyletic groups. Thаt is, аll species in thаt group descend from а common аncestor аnd the group includes аll descendents of thаt common аncestor. The two domаin tree does not support eukаryotа аs а sepаrаte domаin from аrchаeа becаuse аrchаeа would not form а monophyletic group if you excluded eukаryа from the group.

Your question is incomplete, but most probably your full options were

a. Because this group includes all organisms except eukaryotes.

b. Because this group includes an ancestral population and all of its descendants.

c. Because all members of this group lack membrane-bound organelles.

d. Because this group evolved after the origin of bacteria.

Thus, the correct option is B.

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How many 65 euros to dollars ? What is the nursing diagnosis for hypertension? FILL IN THE BLANK. ____ is a predefined ostream object that is pre-associated with a system's standard output, usually a computer screen. a. cin b. cout c. >> d. What is the equation of this graph Joyce Murphy runs a courier service in downtown Seattle. She charges clients $0.50 per mile driven. Joyce has determined that if she drives 3, 300 miles in a month, her total operating cost is $875. If she drives 4, 400 miles in a month, her total operating cost is $1, 095. Joyce has used the high-low method to determine that her monthly cost equation is: total monthly cost = $215 + $0.20 per mile driven. 1. Determine how many miles Joyce needs to drive to break even. (Round your intermediate calculations to Which of the following is/are assumptions for linear regression? Please select all that apply. It's possible that there is only one correct answer. Y| X = x (the conditional distribution of Y given X = x) is a normal distribution. X and Y are independent. The errors e1,e2, e; have the same variance. The expectation of each error e; is O How do you write a literature review sample? A salesperson's salary would be classified as _____, when determining the cost for a manufactured product.a) a direct costb) an indirect costc) a period costd) none of the above the board can only bend so much, and therefore it can only store so much elastic potential energy before it breaks. this means that . select all that apply - In order to break the board, the ball must be dropped from a height greater than some minimum distance.- In order to break the board, the ball must be moving at a speed greater than some minimum speed.- The ball loses some, but not all, of its kinetic energy. It continues to move after the board breaks. 1. I We You They He She It eat. eats. What's Edward doing? bake bread SHAKESPEARE 4. What are you doing? read Shakespeare Do we you they he Does she it eat? 2. What's Janet doing? swim NGUSH Yes, A. What are you doing? B. A. 5. What are you and your friend doing? study English I we you they he she it 3. I'm practicing the piano. Do you practice the piano very often? B. Yes, I do. I practice the piano whenever I can. OS do. does. What are Mr. and Mrs. Green doing? exercise DEAR 6. What's Mary doing? write to her grandparents alguien me puede ayudar a contestarla can someone help me label the food pyramid!! Show that Prefix micro is thousand times greater than prefix nano. Explain how the nazis tried to systematically exterminate groups of people. Chordates possess several distinguishing characteristics that separate them from other animal groups. Select all of the features that one would use to classify members into this phylum. a) postanal tail. b) cranium. c) pharyngeal slits. d) notochord. e) dorsal hollow nerve cord. f) vertebral column. what is adventurer personality type The main categories of software are . Select all that apply. A) Scripting B) Application C) system. D) Developmen Enzymes are proteins, which catalyze chemical reactions.true or false An unlabeled drug bottle was found in the medicine cabinet of Smiths bathroom. A 100 g sample of the drug was analyzed and found to contain 64.94% C, 4.50 % H, 20.36% O, and 10.20% S. The molar mass of the compound was found to be 314.38 g/mol. It may be a drug prescribed for osteoarthritis. Coincidentally, Smiths arthritis has become so intolerable in recent weeks that hes had to rely on the aid of a crutch for mobility. Prolonged ingestion of this drug is thought to lead to a heart attack. Smiths doctor, Franklin Finch, has a quiet reputation of prescribing dangerous drugs to dispose of unwanted patients. Lately, Smith has been gaining more recognition in the community due to his latest research on aromatic hydrocarbons. Could Finchs jealousy by the cause of Tony Smiths death? The distance, d, an object travels is represented by the equation d = rt, where r represents the average rate of speed and t represents time. Determine the units of t if d is measured in feet and r is measured in feet per second. wilderness wasnt a handicap for americans because of their advantages. True or false?