CARBOHYDRATE QUIZ

How many molecules of acetyl-CoA are produced in oxidation of palmitic acid (C16), which involves seven rounds of oxidation?

6

7

9

8

TRUE ANSWER : ?
YOUR ANSWER : ?

The maximum energy per gram on oxidization is yielded from

protein

fat

starch

glycogen

TRUE ANSWER : ?
YOUR ANSWER : ?

Where the acyl-CoA formed in the cytosol is transported for oxidation?

Remains in cytosol

Endoplasmic reticulum

Microsomes

Mitochondrial matrix

TRUE ANSWER : ?
YOUR ANSWER : ?

The transport of acyl-CoA for oxidation using a shuttle involves formation of the intermediate

None of these

Acyl-coenzyme A

acyl-carnitine

3 acetyl-CoA

TRUE ANSWER : ?
YOUR ANSWER : ?

The irreversibility of the thiokinase reactions (formation of initial acyl-CoA)

is due to the subsequent hydrolysis of the product

applies only to even-chain fatty acids

make this activation reaction the committed step on the pathway

both (a) and (b)

TRUE ANSWER : ?
YOUR ANSWER : ?

Each cycle of β-oxidation produces

1 FADH2, 1 NADH and 2 CO2 molecules

1 FAD, 1 NAD+ and 2 CO2 molecules

1 FADH2, 1 NADH and 1 acetyl-CoA

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

TRUE ANSWER : ?
YOUR ANSWER : ?

The three identical b subunits of the F1, complex during ATP synthesis have

different affinities for ATP but not for ADP

different affinities for ATP and for ADP

different affinities for ADP but not for ATP

similar affinities for ADP and ATP

TRUE ANSWER : ?
YOUR ANSWER : ?

The oxidation of methanol (wood alcohol) in human retina tissue indirectly leads to

all of these

blindness

pressure builds up

colour blindness

TRUE ANSWER : ?
YOUR ANSWER : ?

The oxidation of methanol (wood alcohol) in human retina tissue leads directly to the formation of

formaldehyde

CO2

none of these

sugars

TRUE ANSWER : ?
YOUR ANSWER : ?

Long-chain fatty acids are oxidized step-wise in one carbon units starting from the

aliphatic end

none of these

carboxyl end

both (a) and (b)

TRUE ANSWER : ?
YOUR ANSWER : ?

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