Electron Transport Chain

Question 1

What are th two mobile carriers

Answer 1

Coenzyme Q( ubiquinone) and cytochrome c

Question 2

What are the two substrate shuttle systems?

Answer 2

Glycerophosphate shuttle
Malate aspartate shuttle

Question 3

Why is the shuttle system important?

Answer 3

The inner mitochondrial membrane is impermeable to NADH

Question 4

Which complexes are involved in the electron transport chain?

Answer 4

Complexes I to IV

Question 5

Comple V Is also known as?

Answer 5

ATP synthase

Question 6

What does NADH +H reduce in the glycerol phosphate shuttle

Answer 6

Dhap to glycerol 3 phosphate in the presence of glycerol 3pdh

Question 7

G3p in the mitochondria is oxidized by?

Answer 7

FAD which is reduced to FADH2

Question 8

In the malate aspartate shuttle, NADH reduces?

Answer 8

Oxaloacetate to malate

Question 9

In the mitochondria, malate is oxidized to oxaloacetate by?

Answer 9

NAD+

Question 10

Oxaloacetate is transaminated to what in the mitochondria

Answer 10

Aspartate by enzyme amino transferase

Question 11

Which member of th electron transport chain is not a protein?

Answer 11

Coenzyme Q (ubiquinone)

Question 12

Complex I is also known as?

Answer 12

NADH dehydrogenase

Question 13

Which complexes can liberate H+ into th intermembrane space?

Answer 13

I(4
III(4
IV(2

Question 14

Complex II is also known as?

Answer 14

Succinate dehydrogenase

Question 15

Complex III is also known as?

Answer 15

Cytochrome bc1

Question 16

What are cytochromes

Answer 16

Members of the electron transport chain which contain a heme group(porphyrin ring+iron)

Question 17

Complex IV is also known as?

Answer 17

Cytochrome c oxidase

Question 18

What is the pH of the intermembrane space and mitochondrial matrix

Answer 18

Acidic and basic respectively