The stage of photosynthesis during which O2 is produced is the light-dependent reactions involving photosystems I and II. Therefore the correct option is option B.
The light-dependent reactions involving photosystems I and II stage of photosynthesis is during which O2 is produced. Photosynthesis is the process by which autotrophs (organisms capable of producing their own food) convert sunlight into organic compounds that they can use as energy sources.
Pigments such as chlorophyll play a key role in this process, which occurs in the chloroplasts of plant cells. This process of photosynthesis is divided into two stages: a light-dependent reaction and a light-independent reaction.
This process is responsible for converting solar energy into chemical energy in the form of ATP and NADPH. It takes place in the thylakoid membranes of the chloroplast. Carbon dioxide (CO2) is transformed into organic compounds, such as glucose, during this process.
The energy produced during the light-dependent reaction is used to power this reaction. This reaction is also known as the Calvin cycle. Therefore the correct option is option B.
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How are chromosomes arranged during interphase compared to during prophase of mitosis or meiosis? What happens to the chromosomes in the S phase of the cell cycle?
During interphase, chromosomes are arranged in an extended form, while during prophase of mitosis or meiosis, chromosomes are arranged in a condensed form. During the S phase of the cell cycle, chromosomes duplicate, which means that they make a copy of themselves.
During interphase, chromosomes are not clearly visible. They appear as a mass of chromatin. In interphase, the cell's DNA replicates, and the cell grows in size. The cell prepares for the mitotic process during interphase, with the exception of the DNA replication process.
During prophase, chromosomes condense and become visible. The nuclear envelope begins to dissolve, and the spindle fibers begin to form. In the absence of centrosomes, the spindle fibers spread out. In metaphase, the chromosomes line up on the equator of the cell.
In anaphase, the sister chromatids of the chromosomes separate, and in telophase, the cell divides.During the S phase of the cell cycle, chromosomes duplicate, which means that they make a copy of themselves. During this phase, DNA replication occurs, resulting in the formation of sister chromatids.
As a result, each chromosome contains two identical chromatids. During the next mitotic phase, the sister chromatids will be separated into two different daughter cells.
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describe the pathophysiology of inspiration and expiration. how do these processes provide the body with oxygen?
When the diaphragm and the external intercostal muscles contract, inspiration occurs. When the diaphragm and intercostal muscles relax, exhalation occurs.
Muscles involved in inspiration ?The respiratory muscles are divided into three functional groups: the diaphragm, the rib cage muscles, and the abdominal muscles. Each group acts on the chest wall and its compartments, which include the lung-apposed rib cage, diaphragm-apposed rib cage, and abdomen.
Muscles involved in Expiration ?The rib cage muscles, which include the intercostals, parasternals, scalene, and neck muscles, primarily act on the upper part of the rib cage (pulmonary rib cage) and are both inspiratory and expiratory in nature. Expiratory abdominal muscles act on the abdomen and abdominal rib cage.
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which of the following endocrine glands is capable of storing its hormones extracellularly and then slowly releasing them? which of the following endocrine glands is capable of storing its hormones extracellularly and then slowly releasing them? pituitary gland adrenal gland pancreas thyroid gland
The endocrine gland which is capable of storing its hormones extracellularly and then slowly releasing them when required is the pituitary gland. Thus, the correct option will be A.
What is Endocrine gland?Endocrine glands are the ductless glands that release hormones straight into the blood or lymphatic system, which carries them to their target organs. Hormones are messenger molecules released by endocrine glands into the bloodstream to manage physiological functions. Hormones can have an impact on metabolism, development, growth, and reproduction in the body.
The pituitary gland is located at the base of the brain, and it is connected to the hypothalamus, which regulates its activity. The pituitary gland releases hormones that regulate body growth, metabolism, and fluid balance.The pituitary gland stores and secretes several hormones. Antidiuretic hormone (ADH) and oxytocin are two hormones that are made in the hypothalamus and stored in the posterior pituitary gland, whereas the anterior pituitary gland produces and secretes several hormones, including prolactin, follicle-stimulating hormone, luteinizing hormone, growth hormone, and thyroid-stimulating hormone, among others.
Therefore, the correct option will be A.
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which two statements correctly relate RNA, amnio acids, and proteins 
Answer:
1. RNA contains the genetic code
2. RNA reads and translates the DNA code
3. DNA reads and translates the RNA code
Explanation:
DNA, RNA, and protein are all closely related. DNA contains the information necessary for encoding proteins, although it does not produce proteins directly. RNA carries the data from the DNA and transforms that information into proteins that perform most cellular functions.
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RNA, amino acids, and proteins are all related in the process of protein synthesis. RNA carries the genetic information from DNA and directs the synthesis of proteins. Amino acids are the building blocks of proteins, which are large, complex molecules that perform various functions in living organisms.
Explanation:RNA (Ribonucleic Acid) is a molecule that is involved in protein synthesis. It carries the genetic information from DNA and directs the synthesis of proteins.
Amino acids are the building blocks of proteins. They are linked together by peptide bonds to form chains called polypeptides, which then fold into functional proteins.
Proteins are large, complex molecules that perform a variety of functions in living organisms. They are made up of one or more chains of amino acids and are involved in almost every aspect of cellular function.
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The embryo sac of an angiosperm is made up of
A) 8 cells
B) 7 cells and 8 nuclei
C) 8 nuclei
D) 8 cells and 7 nuclei
The embryo sac of an angiosperm, or flowering plant, is a structure found within the ovule that is essential for sexual reproduction.
It is made up of a total of 7 cells and 8 nuclei, with each cell containing one nucleus except for one cell that contains two nuclei. The nuclei within the embryo sac are formed through a series of mitotic and meiotic divisions, resulting in a complex cellular structure that plays a critical role in the fertilization and development of the plant embryo. The 7 cells and 8 nuclei within the embryo sac are organized into three distinct regions: the egg apparatus, the central cell, and the antipodal cells, each of which has specific functions in the reproductive process.
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During mitosis, microtubules of the spindle apparatus attach to the _____ of the chromosomes. A) tetrads B) telomeres C) centrioles D) kinetochore proteins E) asters
During mitosis, the microtubules of the spindle apparatus are responsible for segregating the replicated chromosomes into two daughter cells.
The microtubules attach to the chromosomes via protein structures called kinetochores, which are located at the centromeres of the chromosomes. The kinetochores act as attachment sites for the microtubules and allow the spindle apparatus to pull the chromosomes apart during cell division. The microtubules themselves are made up of protein subunits called tubulins, and they originate from two centrosomes located at opposite ends of the cell. The asters, or radial arrays of microtubules, are also important for maintaining the position of the spindle apparatus during mitosis.
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Select the parts that make up the backbone of the DNA molecule. Select the TWO answers that are correct. a. sugar b.glycine c.nucleoside d.phosphate e.nitrogenous base
The backbone of the DNA molecule is composed of sugar and phosphate groups. These components are connected by phosphodiester bonds, which alternate to form a long chain.
The correct answers to the question “Select the parts that make up the backbone of the DNA molecule” are a. Sugar and d. Phosphate. Sugar (deoxyribose) and phosphate molecules are the two primary components of the DNA backbone. The sugar and phosphate molecules alternate to form the long chain that makes up the backbone. The nitrogenous base, which is bonded to the sugar, extends away from the backbone and pairs with its complementary base on the opposite strand to form the DNA molecule's double helix structure. Nucleoside is a combination of a sugar molecule (ribose or deoxyribose) and a nitrogenous base. These components are used to create nucleotides. Glycine is an amino acid, which is a component of proteins, not DNA. The nitrogenous base is bonded to the sugar and extends away from the backbone, as mentioned above. However, it is not a component of the backbone itself, so it is not a correct answer to this question.
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Which adaptation would be the most beneficial to mammals of both the taiga and marine aquatic biomes
Answer:
Fat is made up of adipose tissue which acts as an insulator in the body due to its fat storage. these fat molecules are bad conductors of heat and do not allow the conduction of heat. Hence, the thick layer of fat for insulation is an adaptation for mammals of both taiga and marine aquatic biomes.
Answer: 8/9
Explanation: add the demanutior
in a sanger sequencing reaction, deoxyribonucleotides terminate a replicating segment of dna, while dideoxyribonucleotides allow it to continue.T/F
The statement is False. In a Sanger sequencing reaction, deoxyribonucleotides terminate a replicating segment of DNA, while dideoxyribonucleotides allow it to continue.
Deoxyribonucleic acid (DNA) is a complex molecule that contains the genetic instructions used in the development and function of all living organisms. DNA is composed of four types of nucleotides: adenine, thymine, guanine, and cytosine. These nucleotides are arranged in a specific order to form a sequence that is unique to each individual organism.
The sequence of DNA is responsible for determining an organism's physical characteristics, such as eye color, hair texture, and height, as well as its susceptibility to certain diseases. DNA is located in the nucleus of a cell and is organized into structures called chromosomes. Humans have 23 pairs of chromosomes, while other organisms may have different numbers.
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The tails of animals can serve many important functions. They are mainly used in balance and locomotion. Many lizards have a fragile, detachable tail that will come off when they are attacked by predators, allowing them to escape.
Why is the presence of a brightly colored, detachable tail an advantage for some lizards?
It helps them blend into their natural environments.
They are more likely to attract mates.
Predators are more likely to grab them by the tail.
Predators are likely to be frightened away by a brightly colored tail.
The presence of a brightly colored, detachable tail an advantage for some lizards, as it helps them blend into their natural environments and hide from predators and even if they get caught the tails of lizard are detachable.
lizards with colorful tails are more likely to attract mates easily
As in reptiles, the Predators are more likely to grab them by the tail, the presence of colorful tail is likely to be frightened away by a brightly colored tail.
Therefore, when a lizard encounters a natural enemy, the lizard’s reaction is usually one of distraction and flight and they can deal with potential predators.
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Select each taxon (group) that would contain "mammals" in a Linnaean classification system.
a.
Animals
b.
Homnids
c.
Chordates
d.
Primates
ASAP PLS
Differentiate and explain the relationships between these:
Central nervous system and Peripheral nervous system
Motor neurons and sensory neurons
axon and dendrite
Answer:
The central nervous system (CNS) is composed of the brain and spinal cord and is responsible for coordinating and controlling body functions. The peripheral nervous system (PNS) is composed of nerves and ganglia outside of the brain and spinal cord and is responsible for connecting the CNS to the rest of the body.
Motor neurons are responsible for transmitting signals from the CNS to muscles and other effector organs to produce a response. Sensory neurons are responsible for transmitting signals from sensory organs and receptors to the CNS.
An axon is a long, slender projection of a nerve cell, or neuron, that conducts electrical impulses away from the neuron's cell body. A dendrite is a short, branching projection of a nerve cell that conducts electrical impulses toward the cell body.
What did Mendel call the two kinds of traits exhibited by the pea plants (one coming from the father, one from the mother)?
a. Genesis
b. Elective traits
c. Alleles
d. Quadrants
Mendel referred to the two types of features that the pea plants exhibited as alleles.
What did Mendel refer to as the two different qualities that the pea plants exhibited?Mendel described the recessive trait as being hidden and the dominant trait as being obvious. When plants were allowed to self-fertilize, a small fraction of the plants exhibited the trait's previously hidden manifestation in the second generation (pollinate themselves).
What do we call the genotype's output, such as the peas' color?The physical representation of an organism's allellic combination is called a phenotype (genotype). There are only two phenotypes that can exist in pea plants if the red allele is dominant and the white allele is recessive.
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vertebrates have circulatory systems in which blood remains within vessels that exchange materials with the interstitial fluid.tre or false
True, vertebrates have circulatory systems in which blood remains within vessels that exchange materials with the interstitial fluid.
Vertebrates are animals with a backbone or spinal column. These include mammals, birds, reptiles, amphibians, and fishes. All vertebrates have a circulatory system that distributes nutrients and oxygen to their bodies and removes waste. The circulation of blood in vertebrates is closed, which means that blood remains within vessels that exchange materials with the interstitial fluid that surrounds their cells. The vertebrate circulatory system is divided into three components: the heart, blood vessels, and blood. The heart is a muscular organ that pumps blood through the body. The blood vessels are tubes that carry blood to and from the heart.
The blood carries nutrients, gases, and wastes throughout the body. The circulatory system provides oxygen to the body's tissues and removes carbon dioxide from them. The vertebrate circulatory system is crucial for maintaining homeostasis in the body. It regulates body temperature and pH, and it also helps to fight off infections by distributing white blood cells throughout the body. Blood is also responsible for transporting hormones and other signaling molecules throughout the body, allowing the different organs and systems to communicate with each other.
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what type of joint connect bones with hyaline cartilage or fibrocartilage?
The type of joint that connects bones with hyaline cartilage or fibrocartilage is called a cartilaginous joint.
Cartilaginous joints, a form of strong and flexible connective tissue, are joints where bones are joined by cartilage. In cartilaginous joints, synchondroses and symphyses are the two primary forms. Hyaline cartilage, a smooth and resilient kind of cartilage, connects the bones in synchondroses, which are joints. These joints, which allow for growth and development, are located in the developing ends of long bones.
Symphyses are joints where the bones are joined by fibrocartilage, a robust and flexible kind of cartilage. Symphyses are present in body parts that need flexibility and shock absorption, such as the pubic symphysis in the pelvis and the intervertebral discs in the spine.
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What procedure did you use to complete the lab?
Outline the steps of the procedure in full sentences. Energy Transfer
Energy transfer refers to the movement of energy from one system to another, or from one object to another.
Energy transfer refers to the movement of energy from one system to another, or from one object to another. This transfer of energy can occur through various mechanisms, such as heat, work, or radiation. For example, when you turn on a lamp, electrical energy is transferred from the power source to the lamp, where it is converted into light energy and heat energy. When you boil water on a stove, the heat from the stove is transferred to the pot, which in turn transfers the heat to the water, causing it to boil.
Energy transfer is a fundamental concept in physics and plays a critical role in many areas of science and engineering, including thermodynamics, mechanics, and electromagnetism. Understanding how energy is transferred and transformed is essential for designing efficient and sustainable technologies, as well as for understanding natural phenomena such as weather patterns and climate change.
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The given question is incomplete, the complete question is:
What is energy transfer ?
The second order of chromatin packing occurs when nucleosomes coil together to form a fiber that is 300 nm in diameter.
T or F
Biology identifying nutrients lab report
anyone got it?
The introduction should provide the background information on the nutrients being studied and their importance in biological systems. It should also include the purpose of the lab experiment, and the hypothesis or research question being tested.
Materials and Methods:
This section should provide a detailed description of the materials and methods used in the experiment. It should include a description of the biological samples used, the chemical reagents, and the laboratory equipment. It should also include a step-by-step description of the procedures used to identify the different nutrients.
Results:
In this section, the data collected from the experiment should be presented in an organized and easy-to-read format. This may include tables, graphs, or charts. The data should be analyzed and interpreted, and any trends or patterns observed should be discussed.
Discussion:
The discussion should focus on the significance of the results obtained from the experiment. The findings should be related back to the purpose of the experiment and the hypothesis or research question being tested. Any limitations or sources of error in the experiment should also be discussed.
Conclusion:
The conclusion should summarize the main findings of the experiment and their significance. It should also provide recommendations for future research on the topic.
References:
Any sources used in the research should be cited in the appropriate format, such as APA or MLA.
Overall, a lab report on identifying nutrients in biological samples should be well-organized, concise, and based on sound scientific principles.
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Full Question ;
What is Biology identifying nutrients lab report?
What type of non-phagocytic cell mediates inflammation? A) natural killer (NK) cell. B) neutrophil. C) eosinophil. D) basophils and mast cells.
When activated, these cells can release cytokines that stimulate other cells to join the immune response. The answer to the question is A) natural killer (NK) cells.
Inflammation is a response of tissues to any injury caused to them. The reaction involves the movement of different cells to the site of injury. This process is divided into two major types of cells: phagocytic cells and non-phagocytic cells. Phagocytic cells are those cells that are capable of phagocytosis. They can ingest and destroy microorganisms or other foreign substances. Examples include neutrophils, monocytes, and macrophages. Non-phagocytic cells are those cells that are incapable of phagocytosis. They play a vital role in the immune system. Non-phagocytic cells include eosinophils, natural killer cells, basophils, and mast cells. Natural killer cells (NK cells) are a type of non-phagocytic cells that mediate inflammation. They are lymphocytes, meaning they are part of the immune system. These cells are cytotoxic, meaning they can destroy cells that have been infected by viruses or cells that have become cancerous. NK cells work in tandem with other immune cells like macrophages and dendritic cells to coordinate the immune response to any injury or infection.
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which parts of a cell have a function in the production and release of an enzyme
Answer:
Lysosome
Explanation:
A lysosome is a membrane-bound cell organellethat contains digestive enzymes.
Lysosome are involved with various cell processes
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A good strategy for weight gain in underweight individuals is to ____. a. eat energy-dense foods b. select foods with high levels of trans fats
Answer: eat energy-dense foods
Mrs. Davis is teaching her students how to use parallel structures in their writing. Her instructional activities would fall under which of the following topics?
A. morphology
B. phonology
C. conventions of English
D. semantics
Mrs. Davis is teaching her students how to use parallel structures in their writing. This instructional activity falls under the topic of C. conventions of English.
Mrs. Davis's instructional activities would fall under the category of "conventions of English.
"What is Parallel Structures?
Parallel structures are also known as parallelism. It is a literary device in which words, phrases, or clauses are repeated. This literary device is used to create contrast, rhythm, and symmetry in sentences. When a writer employs parallel structures, he or she uses grammatically similar forms to express related or parallel ideas. The writer's ideas appear organized and logical when the structure is constant. This makes it easy for the reader to follow along with the piece. Parallel structures also make the writing seem more polished and professional. They can be used in everything from essays to speeches, allowing the writer to get their point across more effectively.
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Place the labels in the correct sequence indicating the order this reversible reaction will occur within the PULMONARY CAPILLARIES. You should start with, and end with, either carbon dioxide or bicarbonate. Reset H20 H HCO3 CO2 H2CO3
At the pulmonary capillaries, bicarbonate re-enters erythrocytes in exchange for chloride ions, and the interaction with carbonic anhydrase is reversed, producing carbon dioxide and water again.
What reversible reaction occurs at the capillaries?The correct sequence of the reversible reaction within the pulmonary capillaries are:
a) Deoxygenated blood with high levels of carbon dioxide enters the capillaries surrounding the alveoli.
b) Oxygen from the alveoli diffuses across the alveolar-capillary membrane and binds to hemoglobin in red blood cells.
c) Carbon dioxide diffuses from red blood cells into the alveoli.
d) Oxygenated blood leaves the capillaries and returns to the heart to be pumped to the rest of the body.
e) Deoxygenated blood with low levels of carbon dioxide returns to the heart to be pumped to the lungs again.
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what is the function of the mastoid process of the temporal bone?
The mastoid process is a bony protrusion located behind the ear, on the temporal bone of the skull. The mastoid process serves as an attachment point for several neck muscles, including the sternocleidomastoid muscle, which helps to rotate and flex the neck.
The mastoid process also contains air cells that are part of the mastoid air cell system, which connects to the middle ear. These air cells help to equalize the pressure between the middle ear and the external environment, which is important for maintaining proper hearing and balance.
In addition, the mastoid process can provide important diagnostic information in cases of certain medical conditions. For example, infections of the middle ear can sometimes spread to the mastoid air cells, resulting in mastoiditis, a potentially serious condition that requires prompt medical attention.
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starting from the concept of a gene pool, explain briefly how populations of early vertebrates could have evolved into different groups (3)
- gene pool is all genes
- geographic isolation
- speciation if populations are reproductively isolated
- in different environments there are different selection pressures
- allele frequencies change
Starting from the concept of a gene pool, the populations of early vertebrates could have evolved into different groups that are gene pool is all genes, geographic isolation, and in different environments there are different selection pressures.
The concept of a gene pool is crucial in understanding how early vertebrate populations could have evolved into various groups. A gene pool refers to all the genes found in a population, including various alleles. The term "allele" refers to the alternative versions of genes that exist. Different groups of early vertebrates could have evolved via different selection pressures and geographic isolation. Let's have a brief look at how populations of early vertebrates could have evolved into different groups by examining the role of a gene pool:The geographic isolation of populations of early vertebrates is one factor that could cause them to evolve into different groups.
Populations separated by geographical barriers such as mountains or water may be unable to reproduce with one another, leading to the formation of different species (speciation) if populations are reproductively isolated. In different environments, there are different selection pressures. Certain alleles may be more advantageous in one environment than in another. As a result, allele frequencies in populations may change, resulting in populations evolving different traits and eventually leading to the formation of different species. In a nutshell, the gene pool, geographic isolation, and different selection pressures in various environments are all important factors in explaining how populations of early vertebrates could have evolved into different groups.
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Classify the items with the appropriate region of the pharynx. Nasopharynx Superiormost portion Houses auditory tube openings Inferiormost portion Location of pharyngeal tonsil Location of the lingual tonsils Lined with pseudostratified Oropharynx ciliated columnar epithelium Location of the palatine Laryngopharynx tonsils
Please, for clarity and better understanding, so as not to muddle up the answer, let's go ahead with the explanation of the pharynx, and the classification that suit the problem.
What is the pharynx?The pharynx, also known as the throat, is a muscular tube-shaped structure that connects the nasal and oral cavities to the esophagus and larynx. It is located in the neck and is involved in the respiratory and digestive systems. The pharynx is divided into three regions: the nasopharynx, oropharynx, and laryngopharynx, each with different functions and structures.
Nasopharynx:Superiormost portion
Houses auditory tube openings
Location of pharyngeal tonsil
Lined with pseudostratified ciliated columnar epithelium
Oropharynx:Inferiormost portion
Location of the palatine tonsils
Lined with non-keratinized stratified squamous epithelium
Laryngopharynx:Location of the lingual tonsils
Lined with non-keratinized stratified squamous epithelium
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T OR F The main role of the axial skeleton is to help us manipulate our environment.
False. The skeletal muscles attached to the appendicular skeleton and the appendicular skeleton itself are what enable us to control our environment.
The axial skeleton primarily functions to support, carry, or protect other bodily parts. The brain, spinal cord, and other internal organs are supported and cushioned by your axial skeleton. The axial skeleton is the foundation for the muscles in your body that move your head, neck, and trunk. These muscles aid in breathing and maintain the stability of your appendicular skeleton.
Your skull, ears, neck, back, and ribcage are among the bones of your axial skeleton. Your shoulder, pelvis, and limb bones, such as those in your arms, hands, legs, and feet, are all part of your appendicular skeleton.
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In the energy pathway called lactic acid fermentation, ______ is reduced to lactic acid, and NADH is oxidized to NAD+, which allows ______ to continue producing a small amount of ATP.
In the energy pathway called lactic acid fermentation, pyruvic acid is reduced to lactic acid, and NADH is oxidized to NAD+, which allows glycolysis to continue producing a small amount of ATP.
What is Lactic Acid Fermentation?
Lactic acid fermentation is a metabolic process in which glucose or other monosaccharides are converted into cellular energy and lactate. It is an anaerobic fermentation that occurs in some bacteria and animal cells. In the presence of oxygen, pyruvate generated by glycolysis is oxidized to produce ATP via the process of aerobic respiration. Pyruvate is transformed into acetyl-CoA by the pyruvate dehydrogenase complex, which is used to fuel the citric acid cycle.
However, in anaerobic circumstances, such as in the absence of oxygen, glycolysis is the only metabolic pathway available to release energy from glucose. Lactic acid fermentation begins when glycolysis generates pyruvate in this situation.
The enzyme lactate dehydrogenase catalyzes the conversion of pyruvate to lactate during lactic acid fermentation. This reaction also oxidizes NADH to NAD+, allowing glycolysis to continue and produce a small amount of ATP. It produces lactate, which is responsible for muscle fatigue during intense physical activity, in animals.
Lactic acid fermentation is also employed in the production of yogurt, cheese, sauerkraut, and kimchi.
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Obligate anaerobes which are sensitive to O2 would be found growing
a) only at the bottom of a tube of thioglycolate broth
b) approximately one-third of the way down the thioglycolate broth
c) throughout a tube of thioglycolate broth
d) only at the very top of a tube of thioglycolate broth
b) approximately one-third of the way down the thioglycolate broth
Obligate anaerobes are microorganisms that require an oxygen-free environment to survive and grow.
They cannot tolerate the presence of oxygen and can be killed by exposure to it. Thioglycolate broth is a type of differential medium that is commonly used to culture microorganisms based on their oxygen requirements.
Thioglycolate broth contains a reducing agent, such as thioglycolate, that removes oxygen from the medium and creates an anaerobic environment. It also contains a pH indicator that changes color depending on the oxygen concentration in the medium.
In thioglycolate broth, obligate anaerobes that are sensitive to oxygen would be found growing only at the bottom of the tube. This is because oxygen is consumed by facultative anaerobes and aerobes in the upper layers of the broth, creating a gradient of oxygen concentration. As obligate anaerobes cannot grow in the presence of oxygen, they are restricted to the bottom of the tube, where the oxygen concentration is lowest.
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how is the natural system helpful to the world and others?
Answer: Natural systems provide for our fundamental survival needs. This may seem self-evident, yet it is alarming to realize that younger generations are growing up in homes that are farther away from their sources of concern, a source we schould all be worried about somtime in our life.
Explanation: