MCQ muscle skeletal dna
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Questions and Answers

  1. Which of the following muscle types are striated and voluntary?

  • (a) Cardiac muscle
  • (b) Skeletal and smooth muscle
  • (c) Skeletal muscle (correct)
  • (d) Smooth muscle
    1. When a muscle is at rest, it is not completely relaxed but is in a state of partial contraction. This is referred to as;

  • (a) flexion.
  • (b) muscle fatigue.
  • (c) muscle tone. (correct)
  • (d) muscle protraction.
    1. Muscles work in pairs known as

  • (a) synergistic pairs.
  • (b) stabilising pairs.
  • agonistic pairs
  • antagonistic pairs (correct)
    1. The functions of the muscular system include all the following except;

    <p>(b) protect internal organs.</p> Signup and view all the answers

    1. Muscle tissue that shows a lack of striations is known as;

    <p>(a) smooth muscle.</p> Signup and view all the answers

    1. Which of the following describes the importance of a synergist in muscle movement?

    <p>(c) Ensures that only one movement can occur at a time</p> Signup and view all the answers

    1. The type of joint found where the humerus meets the ulna is best identified as a

    <p>hinge joint</p> Signup and view all the answers

    1. Which of the following statements about muscles is true?

    <p>(b) muscles join to bones by tendons</p> Signup and view all the answers

    spongy bone:

    <p>(c) contains red bone marrow.</p> Signup and view all the answers

    1. The enzyme that is used to unwind DNA during DNA replication is known as

    <p>dna helicase</p> Signup and view all the answers

    1. DNA bound to proteins and found in the nucleus, in between cell divisions, is referred to as

    <p>chromatin</p> Signup and view all the answers

    1. Which of the following statements is correct?

    <p>(a) A gene is a section of DNA.</p> Signup and view all the answers

    1. Histone modification and DNA methylation

    <p>(a) modify gene expression.</p> Signup and view all the answers

    1. A certain abnormality in cell membranes renders the cell unable to take up amino acids from their external environment. How would this condition impact gene expression in affected cells?

    <p>(c) tRNA molecules would not be able to locate their partner amino acid for translation.</p> Signup and view all the answers

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