Question 18 The process that forms new glucose in the liver is called ... A. gly

Question

Question 18

The process that forms new glucose in the liver is called ...

A.

glycogenolysis

B.

Krebs cycle           

C.

lipolysis

D.

gluconeogenisis

E.

oxidative phosphorylation

Question 57

A person exercises in their “fat burning zone” for 4 hours at 35% VO2peak. The O2 cost of exercise at that work rate is 0.5L/minute. Following exercise the subject rewards himself with an ice-cream sundae (700kcal). The following statement is true(assume 5kcal/lit of O2):

A.

The subject is in neutral energy balance

B.

The subject consumed fewer calories than they expended during exercise

C.

The subject consumed more calories than they expended during exercise

D.

Can’t say

Question 52

The primary purpose of the citric acid cycle is...

aerobic glycolysis

gluconeogenesis using lactate

the decarboxylation of carbon compounds to produce NADH.

the shuttling of hydrogen ions through the inner mitochondrial membrane

Question 51

In aerobic ATP production, the role of oxygen is to...

to keep the electron transport chain operational

to accept electrons from the 3rd cytochrome and thereby oxidizing it so it can accept new electrons

act as a oxidizing agent by accepting electrons from the electron transport chain and combining with hydrogen ions (protons)

all of the above

Question 50

Glucose is necessary for fatty acid oxidation because...

its derivative, pyruvate, is condensated with carbonic acid to form oxaloacetate, which in turn is a necessary carbon compound in the citric acid cycle

it is needed to convert fatty acids to fatty acyl-CoA which in turn is oxidized to acetyl CoA

glucose is decarboxylated into cytochrome oxidase which is a necessary intermediate in the citric acid cycle

its derivative, acetyl CoA, is condensated with carbonic acid to form lactase, which in turn is a necessary carbon compound in the citric acid cycle

A.

glycogenolysis

B.

Krebs cycle           

C.

lipolysis

D.

gluconeogenisis

E.

oxidative phosphorylation

Explanation / Answer

Ans.18 The process of formation of new glucose in liver is known as GLUCONEOGENESIS where glucose is synthesised from proteins, amino acids and fatty acids. In order to maintain normal body glucose levels and prevention from hypoglycemia.

Ans.52 The primary purpose of citric acid cycle is shuttling of hydrogen ion through the inner mitochondria and plays a vital role in releasing stored energy.

Ans. 51 In aerobic ATP production the role of oxygen is to accept electrons, keep the electron operational and combine with hydrogen, hence the correct option is all of the above.

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