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. Skeletal Muscle Physiology, Metabolism and Nutrition (Revision) Quiz on January Exam Quiz, created by V B on 20/12/2015.

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January Exam Quiz

Question 1 of 9

1

The joining of multiple monosaccharides to form a disaccharide or polysaccharide is made possible by the formation of what type of bond?

Select one of the following:

  • Peptide bond

  • Glycoside bond

  • Covalent bond

  • Hydrogen bond

  • A and B

Explanation

Question 2 of 9

1

Which of the following allosteric effectors does NOT positively regulate glycogen phosphorylase?

Select one of the following:

  • CA3+

  • ADP

  • AMP

  • Pi

  • ATP

Explanation

Question 3 of 9

1

Lipolysis in adipose tissue and skeletal muscle is regulated by three enzymes. What are they?

Select one of the following:

  • HSL, CPT-1, MGL

  • FAT/CD36, MGL, ATGL

  • ATGL, HSL, B-HAD

  • MGL, HSL, ATGL

  • HSL, ATGL, CPT-1

Explanation

Question 4 of 9

1

The conversion of pyruvate to acetyl-CoA is dependent on which enzyme?

Select one of the following:

  • CK

  • PFK

  • HK

  • PC

  • PDH

Explanation

Question 5 of 9

1

In order for fatty acids to be oxidised they must first enter the mitochondria in skeletal muscle. What is the key enzyme regulating entry of long chain fatty acids into mitochondria?

Select one of the following:

  • ATGL

  • HSL

  • AMPK

  • CPT-1

  • B-HAD

Explanation

Question 6 of 9

1

During the first weeks of a resistance-training intervention in which the weekly workload is increased there is an increase in muscle protein synthesis. Which proteins are synthesised more rapidly?

Select one of the following:

  • Slow isomers of myosin heavy chain

  • Enzymes of B-oxidation

  • All muscle proteins

  • Enzymes of TCA-cycle

  • Myofibrillar proteins

Explanation

Question 7 of 9

1

Hormone-sensitive lipase (HSL) activity in skeletal muscle is increased during moderate-intensity exercise in response to which regulatory factor(s)?

Select one of the following:

  • Adrenaline & AMPK

  • Adrenaline & muscle contraction (Ca2+)

  • AMPK & insulin

  • Muscle contraction (Ca2+) & insulin

  • Adrenaline only

Explanation

Question 8 of 9

1

The rate of beta-oxidation is reduced in the mitochondria by which two regulatory factors?

Select one of the following:

  • Increased carnitine, increased free CoA

  • Increased acetyl-CoA, increased NADH

  • Decreased carnitine, decreased free CoA

  • Decreased acetyl-CoA, decreased NADH

  • Increased carnitine, decreased NADH

Explanation

Question 9 of 9

1

During the first weeks of an endurance-training intervention in a previously sedentary individual there is an increase in muscle protein degradation. Which proteins are broken down more rapidly?

Select one of the following:

  • Myofibrillar proteins

  • Fast isomers of myosin heavy chain

  • Slow isomers of myosin heavy chain

  • Enzymes of beta-oxidation

  • All muscle proteins

Explanation