939693
Description
Quiz by emmabrudenell, updated more than 1 year ago
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Created by emmabrudenell
over 10 years ago
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Question 1
Question
The main enzymes targets for regulation in the krebs cycle are:
Answer
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citrate synthase and fumarase
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Aconitase, succinate dehydrogenase and fumarase
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citrate synthase, isocitrate dehydrogenase and alpha ketoglutarate dehydrogenase
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isocitrate dehydrogenase and alpha ketoglutarate dehydrogenase
Question 2
Question
Sodium fluoroacetate is...
Answer
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part of the krebs cycle
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an enzyme in the krebs cycle
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A poison which disrupts the krebs cycle
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Naturally in the body and is an activator of the krebs cycle
Question 3
Question
Beriberi is a vitamin C deficiency characterised by neurological and cardiac symptoms
Answer
- True
- False
Question 4
Question
Leigh's syndrome is a fatal neurodegenerative disorder caused by inherited faults in oxidative phosporylation. The pathology of the disease is bilateral lesions. Where are these found?
Answer
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thalamus, Basal ganglia and brain stem and spinal cord
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thalamous, Basal ganglia and brain stem
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brain stem, basal ganglia and spinal cord
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spinal cord and brain stem
Question 5
Question
Electrons used in oxidative phosphorylation come from...?
Answer
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NADH
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FADH2
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NADH and FADH2
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The cytosol of the mitochondrion
Question 6
Question
Complex two pumps out 2 hydrogen ions for every 2 electrons
Answer
- True
- False
Question 7
Question
The krebs cycle can be regulated by hormones
Answer
- True
- False
Question 8
Question
What is Beriberi?
Answer
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A vitamin C deficiency- characterised by neurological and cardiac symptoms
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A vitamin b1 deficiency- characterised by neurological and cardiac symptoms
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A vitamin b1 deficiency- characterised by muscle wasting
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A vitamin C deficiency- characterised by muscle wasting
Question 9
Question
The main target for regulation in the krebs cycle is on the reactions that are reversible
Answer
- True
- False
Question 10
Question
The PDH is inactive when bound to phosphate
Answer
- True
- False
Question 11
Question
The PDH is required in the krebs cycle for the following reaction to take place; oxaloacetate+ acetyl CoA ---> citrate
Answer
- True
- False
Question 12
Question
Which of the following are the steps which are regulated in glycolysis?
Answer
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glucose to glucose-6-phosphate
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glucose-6-phosphate to fructose-6-phosphate
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fructose-6-phosphate to fructose-1,6-bisphosphate
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3-phosphoglycerate to 2-phosphoglycerate
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phosphoenolpyruvate to pyruvate
Question 13
Question
Arsenate will substitute for phosphate in 3- phosphoglycerate
Answer
- True
- False
Question 14
Question
Arsenate is a bad because it makes the net ATP production from the krebs cycle be 0
Answer
- True
- False
Question 15
Question
The net ATP production of glycolysis is 2
Answer
- True
- False
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