939693
Descripción
Test por emmabrudenell, actualizado hace más de 1 año
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Creado por emmabrudenell
hace más de 10 años
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Pregunta 1
Pregunta
The main enzymes targets for regulation in the krebs cycle are:
Respuesta
-
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
Pregunta 2
Pregunta
Sodium fluoroacetate is...
Respuesta
-
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
-
Naturally in the body and is an activator of the krebs cycle
Pregunta 3
Pregunta
Beriberi is a vitamin C deficiency characterised by neurological and cardiac symptoms
Respuesta
- True
- False
Pregunta 4
Pregunta
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?
Respuesta
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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
Pregunta 5
Pregunta
Electrons used in oxidative phosphorylation come from...?
Respuesta
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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
Pregunta 6
Pregunta
Complex two pumps out 2 hydrogen ions for every 2 electrons
Respuesta
- True
- False
Pregunta 7
Pregunta
The krebs cycle can be regulated by hormones
Respuesta
- True
- False
Pregunta 8
Pregunta
What is Beriberi?
Respuesta
-
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
Pregunta 9
Pregunta
The main target for regulation in the krebs cycle is on the reactions that are reversible
Respuesta
- True
- False
Pregunta 10
Pregunta
The PDH is inactive when bound to phosphate
Respuesta
- True
- False
Pregunta 11
Pregunta
The PDH is required in the krebs cycle for the following reaction to take place; oxaloacetate+ acetyl CoA ---> citrate
Respuesta
- True
- False
Pregunta 12
Pregunta
Which of the following are the steps which are regulated in glycolysis?
Respuesta
-
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
Pregunta 13
Pregunta
Arsenate will substitute for phosphate in 3- phosphoglycerate
Respuesta
- True
- False
Pregunta 14
Pregunta
Arsenate is a bad because it makes the net ATP production from the krebs cycle be 0
Respuesta
- True
- False
Pregunta 15
Pregunta
The net ATP production of glycolysis is 2
Respuesta
- True
- False
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