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12 Cards in this Set
- Front
- Back
Glycolysis has two phases:
1. Preparatory phase |
Glucose enters cell and is phosphorylated to glucose-6-phosphate
Glucose-6-P is then converted to fructose-6-phosphate |
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What is the process called that breaks down glycogen to glucose?
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Glycogenolysis
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Glycogen Phosphorylase?
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Adds a phosphate to glucose forming glucose-1-phosphate
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Phosphoglucomutase (or isomerase)?
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rearranges glucose-1phosphate to glucose-6-phosphate
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Pyruvate kinase?
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Creates 2 3C pyruvate molecules from glucose-6-phosphate
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Pyruvate dehydrogenase complex (PDC)?
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Oxidises pyruvate to form Acetly CoA which then enters the Krebs or citric acid cycle.
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What does hexokinase do?
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It is an allosteric enzymes that regulates the number of glucose molecules that enter the cell. It is inhibited by the product glucose-6-phosphate
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ETC:
What happens at Complex 1 |
- oxidizes NADH
- transfers e- to CoQ |
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ETC:
What happens at Complex 2 |
- passes electrons from krebs cycle to CoQ
- e- are transferred via FADH2 - does not pump protons |
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ETC:
What happens at Complex 3 |
- pumps 1H+ per e-
- oxidizes reduced CoQ |
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ETC:
What happens at Comple 4 |
- reduces O2 to H2O
- pumps 1H+ per e- Has allosteric sit for ATP. |
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ETC:
What happens at Comple 5 |
- uses electrochemical proton gradient
to synthesize ATP |