A. The respiratory system takes in oxygen. The circulatory system delivers the oxygen to cells.
The respiratory system is defined as the set of tissues and organs involved in the uptake of oxygen from the atmosphere and the release of carbon dioxide produced during aerobic respiration.
This gas exchange is also called breathing or external respiration. Thus the correct option is A that is the respiratory system takes in oxygen. The circulatory system delivers the oxygen to cells.
In which system lungs and heart are present?Lungs are present in respiratory system and heart is present in circulatory system.
The circulatory system is refers to as which delivers oxygen and nutrients to cells and takes away wastes. The heart pumps oxygenated and deoxygenated blood through blood vessels which include arteries, veins and capillaries.
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Given the properties of minerals, why can hydrochloric not be a mineral?
Answer:
Quartz
Explanation:
Quartz does not react with hydrochloric acid.
Its is pink in color and has anon metallic luster. It has a specific gravity of 2.65. Quartz is continuous framework of SiO4 , with each oxygen being shared with two tetrahedra, giving an overall chemical formula of SiO2.
1. What does a wombat have in common with a koala?
does anyone have 4.01 for science 8th grade pls help me
(ASAP please help short writing)
A. Describe the role of the promoter in eukaryotic gene expression. Explain how a negative regulatory molecule could inhibit transcription at the promoter.
B. Identify TWO events that occur during RNA processing. Explain how RNA splicing increases the variation of mRNA molecules.
C. Describe the role of miRNA in gene expression.
Answer:
Explanation:
A. The role of promoter in eukariotic gene expression is It is to bind transcription factors that regulate transcription initiation. This molecule is so important because control the binding of RNA polymerase to DNA. The promoter region may be short or very long; the longer the promoter is, the more protein binding space is available. A negative regulatory molecule has the possibilty to inhibit transcription at the promoter because these molecules block the binding of RNA polymerase to the promoter region, thus not allowing the initiation of transcription, in some particular cases, the negative regulator binds to the lac repressor and will bind to the promoter in the same site where RNA polymerase would bind to.
B. Two process that occur during RNA processing are RNA splicing and 5′ capping, 3′. RNA splicing is a procces known for removing the introns from the pre-RNA and stuck back together the restant parts, exons. This process has as a goal form a mature mRNA that does not contain the intron sequences. RNA splicing has effect on variation of mRNA molecules because through a process called alternative splicing more than one mRNA can be made from the same gene.
C. Even though they are not quite the same thing miRNA and negative regulatory molecules have the same role, which is inhibit the translation and silence genes. They regulate gene expression by binding to the 3'-UTR of their target mRNAs and destabilizing the mRNA and translational silencing, repressing protein production. Even so, under specific circumstances, miRNA can activate translation or regulate transcription.
what do you notice about the size of the two resulting cells?
Answer:
Females generally produce a few but large gametes, whereas males produce large numbers of much smaller gametes.
Explanation:
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A student drew the following flowchart in her notes. Crushing → Sizing → Concentrating → Dewatering
What does the process show? A. Blending coal B. Refining crude oil C. Processing minerals D. Crystallizing magma
Answer:
processing minerals
Explanation:
Answer:
to refine minerals
Explanation:
question
A student drew the following flowchart.
Crushing -> Sizing -> Concentrating -> Dewatering
What is the purpose of the process?
STRUCTURE OF DNA: Where is DNA found?
DNA is found inside every living cell! Label this diagram to show exactly where:
The majority of DNA is found in the cell nucleus (where it is referred to as nuclear DNA), but a minor portion is also present in the mitochondria, where it is referred to as mitochondrial DNA. Mitochondria are organelles in cells that transform food energy into a form that cells can utilize.
What is DNA composed of?Nucleotides are the chemical units that make up DNA. Three components make up these building blocks: a phosphate group, a sugar group, and one of four different nitrogen bases.
Chains of nucleotides with alternating phosphate and sugar groups are joined to form a strand of DNA.
A single molecule of deoxyribonucleic acid and a protein make up each chromosome (DNA).
DNA and proteins arranged into genes make up a chromosome. 23 pairs of chromosomes are typically present in each cell.
Therefore, DNA is found inside nucleus of every living cell!
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Amplify 1.5 force and motion lesson. I NEED HELP!
Answer:what does that paper mean
Explanation:are u actually in college or is that a job application
Which of the following can we get from plant stems? A. flax seed B.cotton C.carrots D.hay
Answer:
Hay
Explanation:
I got 100% on the quiz, hay it is!
The product we can get from the plant stems are hey. Thus, option D is correct.
What are stems?Stems are considered as very important part of the plant and this is long in structure and green in color and it consist of branches, leaves and flower is also grow on the branches that has been attached to the stem.
Leaf has been considered as very important part of the plant and it has contained the chlorophyll due to which the color of the leaf is green. It has a flattened green structure which has been grown outwards from the stem of a plant which has vascular.
Leaf has been known as the basic site of the process of photosynthesis and it means that the process of the photosynthesis generally occurs in the leaf. The main function of the leaf has to produce food material for plants which will help plants to get nourished.
Therefore, The product we can get from the plant stems are hey. Thus, option D is correct.
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Students are studying ecosystems and the relationships between abiotic and biotic factors in an environment. The students find that the ecosystem in an area has changed over time. They wonder if a change in an abiotic or biotic factor can cause a change in the ecosystem forming a new ecosystem. Which three statements provide evidence that a change in abiotic or biotic factors can cause a new ecosystem to form?
Answer:
C, D, and E
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
based on what you have just read why is studying atoms and their parts and particles helpful to people
Answer:
Studying atoms helps people by providing research to common problems found in our environment, universe, and ourselves. Such as cleaning up oil spills, identification of atoms in our universe, etc.
Explanation:
What is an adaptation?
A group of organisms that can mate to produce fertile offspring
A process by which inherited traits in a population change over generations
A process through which individuals that are better adapted to their environment are more likely to survive and reproduce
A trait that improves chances of survival and reproduction for a group of individuals in a population
Answer:
B
Explanation:
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The initial cross of two true-breeding individuals is known as the:
A. Parental generation
B. Primary generation
C. F1 generation
D. F2 generation
Answer:
monohybrid cross
Fertilization between two true-breeding parents that differ in only one characteristic is called a monohybrid cross. For a monohybrid cross of two true-breeding parents, each parent contributes one type of allele resulting in all of the offspring with the same genotype.
The initial cross of two true-breeding individuals is known as the monohybrid cross.
The Parental generation describe in monohybrid cross.
What is monohybrid crossing?When fertilization occur between two true-breeding parents that differ in only one characteristic is called a monohybrid cross.For a monohybrid cross of two true-breeding parents, each parent contributes one type of allele resulting in all of the offspring with the same genotype.The resulting offspring is called monohybrid.Learn about monohybrid cross,
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How do viruses disrupt homeostasis in their host?
Answer:
Hence, during infection in vivo, a noncytopathic virus may turn off the "differentiation" or "luxury" function of a cell while not killing that cell (loss of vital function). This is turn can disrupt homeostasis and cause disease
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The dopamine system involved in Parkinson's disease is located in which of the following areas of the brain?
Answer:
Dopamine is a substance produced in the brain and is responsible for controlling our movements. The cells that produce dopamine are located in an area known as the brainstem, from where dopamine is then secreted into the basal ganglia, an area of the brain that plays an important function in regulating our movements.
Explanation:
I WILL GIVE 30 POINTS
Matter can be changed through physical processes, chemical processes, or nuclear processes.
What is viscosity?
[tex]\huge{\underline{\mathtt{\red{A}\pink{N} \green{S}\blue{W} \purple{E}\orange{R}}}}[/tex]
Matter is anything that has mass and takes up space. It includes molecules, atoms, fundamental particles, and any substance that these particles make up. Matter can change form through physical and chemical changes, but through any of these changes matter is conserved.
In other words, matter doesn't change into a different substance in a physical change. ... Changes of state—for example, from solid to liquid or from liquid to gas—are also physical changes. Some of the processes that cause physical changes include cutting, bending, dissolving, freezing, boiling, and melting.
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What are 5 different kinds of proteins made by ribosomes?
A newly discovered star was determined to be of similar surface temperature and
intrinsic brightness as the Sun. What is a prediction for the color of this star?
Blue
HR Diagram
White
Red
Yellow
Answer:
our star is a yellow star(our star is the sun)
Explanation:
im not 100 percent sure its the right answer but if it is similar to the sun then it is a yellow star or a yellow dwarf
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goodday!
Investigator Campbell is in charge of the forensics lab. One of the analysts in the lab ended up with contaminated evidence from the scene of an explosion. Looking through their work area, she sees they have a very small table next to a sink with small nylon bags stored in tight rows at room temperature. What would she advise the analyst to change about their evidence system? The evidence needs to be refrigerated quickly between analyses. The evidence can't be stored in nylon bags at all. The bags can't be kept so close together. They can’t be near the sink—it’s too humid.
Answer:
The bags can't be kept so close together.
Explanation:
100 Points for REAL answer fast before it GO Threonine, proline and lysine are amino acids. What macromolecule do amino acids join together to form?
Answer:
polypeptides?
Explanation:
They join together to make polypeptide chains. These chains are then folded and modified to make complete, functional proteins.
How many basic economic questions must every courtry answer?
O one
O two
O three
O four
Three
Have a nice day
Answer:
Explanation:
مرحبًا ، أود أن أحاول مساعدتك في عملك المدرسي. إذا كنت تستطيع أن تشرح أكثر فأنا أقدر ذلك.
2. Match the following:
(a) Grass
(b) Deer
(c) Cobra
(d) Vulture
(e) Microbes
(1) Carnivore
(ii) Decomposers
(iii) Primary consumer
(iv) Autotroph
(v) Scavenger
Answer:
Grass - Autotroph
Deer - Primary consumer
Cobra - Carnivore
Vulture - Scavenger
Microbes - Decomposers
Have a good day ! :)
Which of these BEST desnibes the structural difference between the DNA of bactena and the DNA of humans?
Human DNA is much more complex in structure
Bacteria do not have DNA so there is nothing to come
ADNA made of the same components so there would be no difference
Bacteria DNA com 3 toge buses while the human DNA contains
Answer:
Human DNA is much more complex in structure
2.
A cell detects that it had depleted its stores of Ca2+ Which of the following would not help the cell regain homeostasis?
(A) O Increasing the number of chloride ion channels on the cell membrane
(B) O Releasing a hormone that prompts the breakdown of bone to release calcium
(CO Signaling the intestine to absorb more calcium from food
(D) O Decreasing processes which require calcium
Come Back to This I'm guessing Remove My Choice
Answer:
(A) O Increasing the number of chloride ion channels on the cell membrane
Explanation:
This is because options B, C and D require processes which make calcium available for the cell and homeostasis is the process of returning the cell back into its stable condition.
All other options except A do not help the cell return to its stable condition.
So, the answer is A
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Please help with these questions!!
3. Which feature is commonly formed
at a plate boundary where oceanic
crust converges with continental crust?
(1) a mid ocean ridge (2) an ocean trench (3) a transform fault (4) new oceanic crust
Answer:
2) an ocean trench
Explanation:
Ocean trench is a commonly formed at a plate boundary where oceanic crust converges with continental crust.
What is Ocean Trench?Long, narrow depressions on the seafloor are known as ocean trenches. These chasms are among the deepest natural places on Earth and the deepest portions of the ocean.
Every ocean basin on the planet has ocean trenches, but the deepest ones encircle the Pacific Ocean as part of the so-called "Ring of Fire," which is also home to active volcanoes and earthquake-prone regions. Tectonic activity, which refers to the movement of the Earth's lithosphere, is what causes ocean trenches.
Ocean trenches in particular are a characteristic of convergent plate borders, which occur where two or more tectonic plates collide. In a process known as subduction, dense lithosphere melts or slides beneath less dense lithosphere along numerous convergent plate borders, forming a trench.
Therefore, Ocean trench is a commonly formed at a plate boundary where oceanic crust converges with continental crust.
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Say you were traveling up a mountain, where would you have the most trouble breathing? At the bottom of the mountain or at the top of the mountain? Describe why.
Answer:
top of the mountain
Explanation:
the air pressure on top of a mountain is really bad so it is harder to breathe
what surfaces or objects on earth would reflect infrared light well?
Answer:
Infrared, sometimes called infrared light, is electromagnetic radiation with wavelengths longer than those of visible light. It is therefore invisible to the human eye.
Aside from water vapor, bodies of water on the surface of the Earth also absorb IR wavelengths well. Glass, wood, brick, stone, asphalt and paper all absorb IR radiation. While regular silver-backed mirrors reflect visible light waves, allowing you to see your reflection, they absorb infrared radiation.
Which corrections should be made to describe
photosynthesis accurately? Check all that apply.
O (1) Light energy and chemical energy should be
switched.
(1) Chemical energy should be changed to
mechanical energy.
(3) Plants that contain chlorophyll should not be
included.
0 (3) Oxygen should be changed to carbon dioxide.
0 (4) Animals and plants should be switched.
Answer:
1) Light energy and chemical energy should be switched
3) Plants that contain chlorophyll should not be included
5) Animals and plants should be switch
Explanation:
Photosynthesis is a biological process through which green plants make their own food in the presence of sunlight. So, photosynthesis is a process in which Light energy is converted to chemical energy.
Plants carrying chlorophyll should not be included as their primary source is light, carbon dioxide and water.
During photosynthesis, plants make oxygen and releases it into atmosphere which is further utilized by animals or humans for metabolic activities so, photosynthesis allows the flow of energy from plants to animals.
Hence, the correct answers are " 1, 3, and 5."
Answer:
1, 3, 5 ez as that
Explanation:
1.What weakens coral exoskeletons?
Excess salt
Excess CO2
Excess sunlight
Excess fishes
2.A quarter of marine life lives in which type of ecosystem?
fish
zooxanthellae
coral reef
ocean
3.What do corals provide for zooxanthellae?
food
sunlight
a source of oxygen
a protective area
Answer:
1 is excess CO2
2 is coral reef
3 both a protective area and food in the way of nutrients though if you only can choose one go with protective area
Explanation: