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    what role does cellular respiration play in the water cycle? it removes h2o from the atmosphere during glycolysis. it removes h2o from the atmosphere during acetyl coa formation. it releases h2o to the atmosphere during the citric acid cycle. it releases h2o to the atmosphere during electron transport.

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    get what role does cellular respiration play in the water cycle? it removes h2o from the atmosphere during glycolysis. it removes h2o from the atmosphere during acetyl coa formation. it releases h2o to the atmosphere during the citric acid cycle. it releases h2o to the atmosphere during electron transport. from EN Bilgi.

    What role does cellular respiration play in the water cycle?

    It removes H2O from the atmosphere during glycolysis. Glycolysis is the first step in the process, in which energy is extracted from glucose in ten stages.

    What role does cellular respiration play in the water cycle? A) It removes H2O from the atmosphere during glycolysis. B) It removes H2O from the atmosphere during acetyl CoA formation. C) It releases H2O to the atmosphere during the citric acid cycle. D) It releases H2O to the atmosphere during electron transport.

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    It removes H2O from the atmosphere during glycolysis.

    Explanation:

    Cellular respiration is a process used by aerobes to process food by combining it with oxygen and diverting the resulting energy via the mitochondria. It is then stored using adenosine triphosphate (ATP), which fuels other processes.

    The Cellular Respiration Process Steps (Source: http://hyperphysics.phy-astr.gsu.edu)

    Glycolysis is the first step in the process, in which energy is extracted from glucose in ten stages. The process consumes water, thus removing it from the atmosphere and affecting the water cycle. The final step of the cellular respiration process, electron transport, releases water back into the cell, from where it may return into the atmosphere and contribute to the water cycle, as well.

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    The Water Cycle

    Changes in the Global Water Cycle

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    . (2022) 'What role does cellular respiration play in the water cycle? A) It removes H2O from the atmosphere during glycolysis. B) It removes H2O from the atmosphere during acetyl CoA formation. C) It releases H2O to the atmosphere during the citric acid cycle. D) It releases H2O to the atmosphere during electron transport'. 24 March. (Accessed: 16 June 2022).

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    What can be the cause of weakened muscle and kidney functioning? A) Too little potassium. B) Too much potassium. C) Too little calcium. D) Too much calcium. Please select the best answer from the choices provided.

    Where do you stand regarding animal testing?

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    Biology, Cellular Respiration Flashcards

    Start studying Biology, Cellular Respiration. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

    Biology, Cellular Respiration

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    The Venn diagram compares aerobic respiration and anaerobic respiration.

    mc026-1.jpg

    Which statement could be categorized only in the anaerobic section of the Venn diagram?

    is performed by eukaryotes

    has commercial uses regenerates NADH

    occurs in the mitochondria

    Click card to see definition 👆

    has commercial uses

    Click again to see term 👆

    How many ATP are generated in the electron transport chain?

    2 4 32 36

    Click card to see definition 👆

    32

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    1/10 Created by ShakurFan

    Terms in this set (10)

    The Venn diagram compares aerobic respiration and anaerobic respiration.

    mc026-1.jpg

    Which statement could be categorized only in the anaerobic section of the Venn diagram?

    is performed by eukaryotes

    has commercial uses regenerates NADH

    occurs in the mitochondria

    has commercial uses

    How many ATP are generated in the electron transport chain?

    2 4 32 36 32

    What do aerobic respiration and anaerobic respiration have in common?

    Both begin with glycolysis.

    Both occur in mitochondria.

    Both require oxygen to proceed.

    Both end with the electron transport chain.

    Both begin with glycolysis.

    What do alcohol fermentation, acetyl CoA formation, and the Krebs cycle have in common?

    All produce water.

    All produce carbon dioxide.

    All produce ATP.

    All produce alcohol.

    All produce carbon dioxide.

    The Venn diagram compares aerobic respiration and anaerobic respiration.

    mc024-1.jpg

    Which statement should be categorized only in the aerobic section of the Venn diagram?

    occurs in the cytoplasm

    produces water requires no oxygen

    is performed by yeast

    produces water

    Which statement about cellular respiration is true?

    It produces oxygen. It requires water.

    It is used by every living cell.

    It converts energy to food.

    It is used by every living cell.

    What role does cellular respiration play in the water cycle?

    It removes H2O from the atmosphere during glycolysis.

    It removes H2O from the atmosphere during acetyl CoA formation.

    It releases H2O to the atmosphere during the citric acid cycle.

    It releases H2O to the atmosphere during electron transport.

    It releases H2O to the atmosphere during electron transport.

    Consider the stage of cellular respiration that is shown in the diagram.

    mc001-1.jpg

    What is the net ATP production at this stage of cellular respiration?

    2 ATP 4 ATP 32 ATP 36 ATP 2 ATP

    During which process is water produced?

    alcohol fermentation

    acetyl CoA formation

    electron transport chain

    citric acid cycle

    electron transport chain

    What is the main difference between aerobic respiration and anaerobic respiration?

    Aerobic respiration requires oxygen to proceed, but anaerobic respiration does not.

    Aerobic respiration occurs during photosynthesis, but anaerobic respiration occurs during cellular respiration.

    Aerobic respiration produces ATP, but anaerobic respiration does not.

    Aerobic respiration occurs only in living organisms, but anaerobic respiration occurs in nonliving organisms.

    Aerobic respiration requires oxygen to proceed, but anaerobic respiration does not.

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    Verified questions

    BIOLOGY

    In a country with a very slow growth rate, predict which age groups are the largest in the population.

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    Pyruvate oxidation

    How pyruvate from glycolysis is converted to acetyl CoA so it can enter the citric acid cycle. Pyruvate is modified by removal of a carboxyl group followed by oxidation, and then attached to Coenzyme A.

    Pyruvate oxidation and the citric acid cycle

    Pyruvate oxidation

    How pyruvate from glycolysis is converted to acetyl CoA so it can enter the citric acid cycle. Pyruvate is modified by removal of a carboxyl group followed by oxidation, and then attached to Coenzyme A.

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    Introduction

    Among the four stages of cellular respiration, pyruvate oxidation is kind of the odd one out; it’s relatively short in comparison to the extensive pathways of glycolysis or the citric acid cycle. But that doesn’t make it unimportant! On the contrary, pyruvate oxidation is a key connector that links glycolysis to the rest of cellular respiration.

    Overview of pyruvate oxidation

    At the end of glycolysis, we have two pyruvate molecules that still contain lots of extractable energy. Pyruvate oxidation is the next step in capturing the remaining energy in the form of

    \text{ATP} ATP

    start text, A, T, P, end text

    , although no \text{ATP} ATP

    start text, A, T, P, end text

    is made directly during pyruvate oxidation.

    Simplified diagram of pyruvate oxidation. Pyruvate—three carbons—is converted to acetyl CoA, a two-carbon molecule attached to coenzyme A. A molecule of coenzyme A is a necessary reactant for this reaction, which releases a molecule of carbon dioxide and reduces a NAD+ to NADH.

    In eukaryotes, this step takes place in the matrix, the innermost compartment of mitochondria. In prokaryotes, it happens in the cytoplasm. Overall, pyruvate oxidation converts pyruvate—a three-carbon molecule—into acetyl

    \text{CoA} CoA

    start text, C, o, A, end text

    —a two-carbon molecule attached to Coenzyme A—producing an

    \text{NADH} NADH

    start text, N, A, D, H, end text

    and releasing one carbon dioxide molecule in the process. Acetyl

    \text{CoA} CoA

    start text, C, o, A, end text

    acts as fuel for the citric acid cycle in the next stage of cellular respiration.

    Pyruvate oxidation steps

    Pyruvate is produced by glycolysis in the cytoplasm, but pyruvate oxidation takes place in the mitochondrial matrix (in eukaryotes). So, before the chemical reactions can begin, pyruvate must enter the mitochondrion, crossing its inner membrane and arriving at the matrix.

    In the matrix, pyruvate is modified in a series of steps:

    More detailed diagram of the mechanism of pyruvate oxidation.

    A carboxyl group is removed from pyruvate and released as carbon dioxide.

    The two-carbon molecule from the first step is oxidized, and NAD+ accepts the electrons to form NADH.

    The oxidized two-carbon molecule, an acetyl group, is attached to Coenzyme A to form acetyl CoA.

    Image credit: "Oxidation of pyruvate and the citric acid cycle: Figure 1" by OpenStax College, Biology, CC BY 3.0

    Step 1. A carboxyl group is snipped off of pyruvate and released as a molecule of carbon dioxide, leaving behind a two-carbon molecule.Step 2. The two-carbon molecule from step 1 is oxidized, and the electrons lost in the oxidation are picked up by

    \text{NAD}^+ NAD +

    start text, N, A, D, end text, start superscript, plus, end superscript

    to form \text{NADH} NADH

    start text, N, A, D, H, end text

    .

    Step 3. The oxidized two-carbon molecule—an acetyl group, highlighted in green—is attached to Coenzyme A (

    \text{CoA} CoA

    start text, C, o, A, end text

    ), an organic molecule derived from vitamin B5, to form acetyl

    \text{CoA} CoA

    start text, C, o, A, end text

    . Acetyl \text{CoA} CoA

    start text, C, o, A, end text

    is sometimes called a carrier molecule, and its job here is to carry the acetyl group to the citric acid cycle.

    The steps above are carried out by a large enzyme complex called the pyruvate dehydrogenase complex, which consists of three interconnected enzymes and includes over 60 subunits. At a couple of stages, the reaction intermediates actually form covalent bonds to the enzyme complex—or, more specifically, to its cofactors. The pyruvate dehydrogenase complex is an important target for regulation, as it controls the amount of acetyl

    \text{CoA} CoA

    start text, C, o, A, end text

    fed into the citric acid cycle

    ^{1,2,3} 1,2,3

    start superscript, 1, comma, 2, comma, 3, end superscript

    .

    If we consider the two pyruvates that enter from glycolysis (for each glucose molecule), we can summarize pyruvate oxidation as follows:

    Two molecules of pyruvate are converted into two molecules of acetyl

    \text{CoA} CoA

    start text, C, o, A, end text

    .

    Two carbons are released as carbon dioxide—out of the six originally present in glucose.

    2 \text{NADH} NADH

    start text, N, A, D, H, end text

    are generated from \text{NAD}^+ NAD +

    start text, N, A, D, end text, start superscript, plus, end superscript

    . Why make acetyl

    Source : www.khanacademy.org

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