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22 Cards in this Set
- Front
- Back
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What are the stages of cellular respiration? |
Glycolysis, the citric acid cycle, and oxidative phosphorylation. |
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What is cellular respiration? |
Aerobic harvesting of energy from food molecules by cells (Breaking down of O2 and converting it to CO2 and H2O). |
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In what type of cell does cellular respiration occur? |
Eukaryotic cells (i.e. both plant and animal cells). |
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What is an oxidation-reduction reaction (redox reaction)? |
Movement of electrons from one molecule to another. |
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In a redox reaction, what is oxidation? |
The loss of electrons from a substance |
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In a redox reaction, what is reduction? |
Addition of electrons to a substance |
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Why do oxidation and reduction always go together? |
Because electron transfers always require a donor and an acceptor. |
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Where does glycolysis occur? |
In the cytosol of the cell. |
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Where does the citric acid cycle take place? |
Within the mitochondria. |
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Where does the CO2 come from when you exhale? |
From the mitochondria as a byproduct of pyruvate oxidation and the citric acid cycle. |
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What produces most of a cells ATP? |
Third stage of cellular respiration, aka oxidation phosphorylation. |
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What is chemiosmosis? |
Process of energy transfer which phosoholyates ADP? |
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What is phosphorylation? |
The process of energy release in which ATP transfers its 3rd phosphate group to another molecule. |
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What is ATP? |
Adenosine triphosphate |
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What are the components of ATP? |
Adenine, ribose, and 3 phosphate groups. |
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What is the result of hydrolysis of ATP? |
ADP |
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What happens to energy during cellular work? |
ATP energy is released in an energetic reaction, such as breaking down glucose, and is used in an endergonic reaction to generate ATP from ADP.v |
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What type of process is cellular respiration? |
An exergonic (energy-releasing) process |
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What happens with energy during cellular respiration? |
Glucose bonds are broken, releasing energy, and the energy is used to form ATP. |
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How many ATP molecules can be created per glucose molecule during cellular respiration? |
32 ATP molecules |
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When would a molecule be considered oxidized? |
When it loses one or more electrons. |
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A molecule is reduced when... |
It gains one or more electrons. |
