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Nutrition and metabolism > Quiz L12 > Flashcards

Quiz L12 Flashcards

1
Q

Which of these are not a system of protein breakdown?

a. Transcripton
b. caspase
c. Calpain
d. Lysosomal

A

Transcription

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2
Q

What is LPL?

A

Lipoprotein lipase

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3
Q

What will increased acetyl-coa inhibit?

A

Pyruvate dehydrogenase complex

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4
Q

What will inhibition of PFK inhibit?

A

Inhibit carbohydrate oxidation and glycolysis

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5
Q

What effect will a reduction in FAD have on flux through beta oxidation?

A

Reduce it

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6
Q

What is increased glycogenolysis in exercise likely due to?

A

Increased AMP

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7
Q

Which of these are not required for the PDC reactions?

a. ATP
b. NAD
c. CoA
d. FAD

A

ATP

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8
Q

What happens during transcription?

A

Copying of DNA to MRNA

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9
Q

What happens during translation?

A

Reading of mRNA to make polypeptide chain

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10
Q

What happens during post translational modifications?

A

Folding of chain into a useful structure

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11
Q

What % of total amino acid uptake by the liver during exercise is made up of alanine?

A

50%

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12
Q

Which of the following is true about the decarboxylation of alpha ketoacids involving branched chain alpha-keto acid dehydrogenase:

a. Occurs in the mitochondria
b. Is activated by phosphorylation
c. Is inactivated by dephosphorylation
d. All of these answers are correct.

A

Occurs in the mitochondria

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13
Q

Which protein breakdown system is most likely to be used in the muscle following exercise?

A

Calpain system

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14
Q

In untrained individuals how does mitochondrial protein synthesis respond post resistance exercise?

A

It increases

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15
Q

Mixed muscle protein sysnthesis measure protein synthesis of the following fractions:

a. Sarcoplasmic and myofibrillar
b. Collagen, myofibrillar and mitochondria
c. Sarcoplasmic, collagen and mitochondria
d. Collagen, myofibrillar, mitochondria and sarcoplasmic

A

Collagen, myofibrillar, mitochondria and sarcoplasmic

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16
Q

When BCAA are oxidised the nitrogen group is generally used to form:

A

Glutamate and then alanine

17
Q

Which of these amino acids has 2 nitrogens:

a. Leucine
b. Isoleucine
c. Glutamine
d. Glutamate

A

Glutamine

18
Q

What are the stages of translation?

A

Initiation, elongation and termination

19
Q

What is the order of muscle protein synthesis?

A

Transcription, translation, folding

20
Q

In untrained individuals how does mitochondrial protein synthesis respond post resistance exercise?

A

It increases

21
Q

What happens to net protein balance following resistance exercise only?

A

It increases but remain negative

Nutrition and metabolism (25 decks)

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