Biochemistry

Question: The oxidation of methanol (wood alcohol) in human retina tissue indirectly leads to
[A].

pressure builds up

[B].

colour blindness

[C].

blindness

[D].

all of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: The oxidation of methanol (wood alcohol) in human retina tissue leads directly to the formation of
[A].

formaldehyde

[B].

sugars

[C].

CO2

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: The maximum energy per gram on oxidization is yielded from
[A].

fat

[B].

protein

[C].

glycogen

[D].

starch

Answer: Option A

Explanation:

No answer description available for this question.

Question: How many molecules of acetyl-CoA are produced in oxidation of palmitic acid (C16), which involves seven rounds of oxidation?
[A].

6

[B].

7

[C].

8

[D].

9

Answer: Option C

Explanation:

No answer description available for this question.

Question: Each cycle of β-oxidation produces
[A].

1 FADH2, 1 NAD+, and 1 acetyl-CoA

[B].

1 FADH2, 1 NADH and 1 acetyl-CoA

[C].

1 FADH2, 1 NADH and 2 CO2 molecules

[D].

1 FAD, 1 NAD+ and 2 CO2 molecules

Answer: Option B

Explanation:

No answer description available for this question.

Question: The transport of acyl-CoA for oxidation using a shuttle involves formation of the intermediate
[A].

3 acetyl-CoA

[B].

Acyl-coenzyme A

[C].

acyl-carnitine

[D].

None of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: Where the acyl-CoA formed in the cytosol is transported for oxidation?
[A].

Mitochondrial matrix

[B].

Microsomes

[C].

Endoplasmic reticulum

[D].

Remains in cytosol

Answer: Option A

Explanation:

No answer description available for this question.

Question: The irreversibility of the thiokinase reactions (formation of initial acyl-CoA)
[A].

make this activation reaction the committed step on the pathway

[B].

is due to the subsequent hydrolysis of the product

[C].

applies only to even-chain fatty acids

[D].

both (a) and (b)

Answer: Option D

Explanation:

No answer description available for this question.

Question: Long-chain fatty acids are oxidized step-wise in one carbon units starting from the
[A].

carboxyl end

[B].

aliphatic end

[C].

both (a) and (b)

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.