Electron Flow in the Absence of Oxygen

Question 1

In electron transport chain, it is the last electron acceptor and considered an essential material in aerobic respiration.

Answer 1

Oxygen

Question 2

If there is no oxygen available, what process/es will take place in order to generate ATP

Answer 2

Fermentation

Question 3

Which of the following is the CORRECT definition of fermentation?

A. Fermentation is a pathway that consists of Krebs cycle with some extra
reactions on the tail end.
B. Fermentation is a pathway that consists of glycolysis with some extra
reaction on the tail end.
C. Fermentation is a pathway that consists of chemiosmosis with some extra
reaction on the tail end.
D. Fermentation is a pathway that consists of oxidation with some extra
reaction on the tail end.

Answer 3

B. Fermentation is a pathway that consists of glycolysis with some extra

Question 4

This enzyme is necessary in catalyzing the conversion of pyruvate to lactate.

Answer 4

Lactate dehydrogenase

Question 5

This disease is caused by having low supply of oxygen in tissues of our body organ.

Answer 5

Hypoxemia

Question 6

Which of the following is TRUE about the role of oxygen in cellular respiration?

A. Oxygen pumps electrons from mitochondrial membrane to intermembrane space.
B. Oxygen is the byproduct of electron transport chain that is needed in order to convert ADP to ATP.
C. Oxygen is the last electron acceptor in electron transport chain that splits into two units of oxygen and becomes water once the protons available attaches to it.
D. Oxygen is the last electron acceptor in the citric acid cycle that splits into two units of oxygen and becomes water once the protons available attaches to it.

Answer 6

C. Oxygen is the last electron acceptor in electron transport chain that splits into two units of oxygen and becomes water once the protons available attaches to it.

Question 7

In what aerobic respiration process does oxygen is needed to accept electron from complex IV?

Answer 7

Electron transport chain

Question 8

What byproduct of glycolysis is needed to proceed with fermentation without the presence of oxygen?

Answer 8

Pyruvate

Question 9

What happens to NADH when fermentation takes place after glycolysis?

Answer 9

Oxidized to become NAD+

Question 10

This occurs when there is low oxygen level in the blood that in turn may result to headache and shortness of breath.

Answer 10

Hypoxia