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. Skeletal Muscle Physiology, Metabolism and Nutrition (Revision) Quiz sobre January Exam Quiz, criado por V B em 20-12-2015.

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January Exam Quiz

Questão 1 de 9

1

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

Selecione uma das seguintes:

  • Peptide bond

  • Glycoside bond

  • Covalent bond

  • Hydrogen bond

  • A and B

Explicação

Questão 2 de 9

1

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

Selecione uma das seguintes:

  • CA3+

  • ADP

  • AMP

  • Pi

  • ATP

Explicação

Questão 3 de 9

1

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

Selecione uma das seguintes:

  • HSL, CPT-1, MGL

  • FAT/CD36, MGL, ATGL

  • ATGL, HSL, B-HAD

  • MGL, HSL, ATGL

  • HSL, ATGL, CPT-1

Explicação

Questão 4 de 9

1

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

Selecione uma das seguintes:

  • CK

  • PFK

  • HK

  • PC

  • PDH

Explicação

Questão 5 de 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?

Selecione uma das seguintes:

  • ATGL

  • HSL

  • AMPK

  • CPT-1

  • B-HAD

Explicação

Questão 6 de 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?

Selecione uma das seguintes:

  • Slow isomers of myosin heavy chain

  • Enzymes of B-oxidation

  • All muscle proteins

  • Enzymes of TCA-cycle

  • Myofibrillar proteins

Explicação

Questão 7 de 9

1

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

Selecione uma das seguintes:

  • Adrenaline & AMPK

  • Adrenaline & muscle contraction (Ca2+)

  • AMPK & insulin

  • Muscle contraction (Ca2+) & insulin

  • Adrenaline only

Explicação

Questão 8 de 9

1

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

Selecione uma das seguintes:

  • Increased carnitine, increased free CoA

  • Increased acetyl-CoA, increased NADH

  • Decreased carnitine, decreased free CoA

  • Decreased acetyl-CoA, decreased NADH

  • Increased carnitine, decreased NADH

Explicação

Questão 9 de 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?

Selecione uma das seguintes:

  • Myofibrillar proteins

  • Fast isomers of myosin heavy chain

  • Slow isomers of myosin heavy chain

  • Enzymes of beta-oxidation

  • All muscle proteins

Explicação