Quiz
Citric Acid Cycle Self Test
Questions in this quiz (19)
1The citric acid cycle is an example of an amphibolic pathway.
- ATrue
- BFalse
2The molecule shown is:
- ABiotin
- BCoenzyme A
- CAcetyl-CoA
- DFlavin mononucleotide
- ELipoamide
3The molecule shown above is a cofactor of:
- Asuccinate dehydrogenase
- Bcitrate synthase
- Calpha-ketoglutarate dehydrogenase
- Dsuccinyl-CoA synthetase
- Epyruvate carboxylase
4Which one of the following enzymes of the citric acid cycle catalyzes an irreversible step?
- Aisocitrate dehydrogenase
- Bsuccinate dehydrogenase
- Csuccinyl-CoA synthetase
- Dfumarase
- Emalate dehydrogenase
5Which of the following conditions decreases the rate of oxidation of acetyl-CoA by the citric acid cycle?
- Aa low ATP/ADP ratio
- Ba low NAD+/NADH ratio
- Ca low GTP/GDP ratio
- Da high NAD+/NADH ratio
- Ean increase in Ca2+ concentration
6In eukaryotes the enzymes of the citric acid cycle are found in the cytosol.
- ATrue
- BFalse
7The citric acid cycle is an anaerobic pathway.
- ATrue
- BFalse
8The only reaction in the citric acid cycle that produces a carbon-carbon bond is catalyzed by citrate synthase.
- ATrue
- BFalse
9Which enzyme is unique to the glyoxylate cycle?
- Amalic enzyme
- Bmalate dehydrogenase
- Cisocitrate lyase
- DPEP carboxylase
- Epyruvate carboxylase
10The only reaction of the citric acid cycle that provides substrate level phosphorylation is catalyzed by:
- Apyruvate dehydrogenase
- Bmalate dehydrogenase
- Cisocitrate dehydrogenase
- Dsuccinate dehydrogenase
- Esuccinyl-CoA synthetase
11The molecule shown is:
- Abiotin
- Bcoenzyme A
- CFAD
- Dflavin mononucleotide
- Elipoamide
12The molecule shown above is a cofactor of:
- Asuccinate dehydrogenase
- Bcitrate synthase
- Cisocitrate dehydrogenase
- Dsuccinyl-CoA synthetase
- Epyruvate carboxylase
13Which one of the following enzymes of the citric acid cycle catalyzes an irreversible step?
- Asuccinyl-CoA synthetase
- Bsuccinate dehydrogenase
- Ccitrate synthase
- Dfumarase
- Emalate dehydrogenase
14In mammalian tissues, isocitrate dehydrogenase is allosterically stimulated by
- Ahigh ATP/ADP ratio
- Blow NAD+/NADH ratio
- Clow acetyl CoA/CoA ratio
- Dhigh NAD+/NADH ratio
- Ea decrease in Ca2+ concentration
15In eukaryotes the enzymes of the citric acid cycle are found in the mitochondria.
- ATrue
- BFalse
16The citric acid cycle is an anaerobic pathway.
- ATrue
- BFalse
17The only reaction in the citric acid cycle that produces substrate level phosphorylation is catalyzed by citrate synthase.
- ATrue
- BFalse
18All of the statements below about the glyoxylate pathway are true EXCEPT:
- AThe enzymes of the glyoxylate pathway are found in the glyoxysomes.
- BThe glyoxysomes contain all of the enzymes of the citric acid cycle.
- CThe glyoxylate pathway allows plants, yeast, and microorganisms to thrive using acetate as the sole carbon source.
- DThe glyoxylate pathway bypasses the two oxidative decarboxylation reactions of the citric acid cycle.
- EIn the glyoxylate pathway, isocitrate is routed through isocitrate lyase and malate synthase.
19The anaplerotic reactions associated with the citric acid cycle are a result of:
- AThe use of many of the citric acid cycle intermediates in biosynthesis.
- BThe oxidative nature of the citric acid cycle.
- CThe decarboxylation reactions of the citric acid cycle.
- DThe production of reduced coenzymes.
- EThe irreversible nature of three citric acid cycle reactions.
Information
- Description
- Self test for Exam 2 Citric Acid Cycle first two pages.
- Author
- Emily Richards
- Language
- English
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