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AP Intermediate 1st Year Locomotion and Movement — practice questions — page 2

Explore 50 free Locomotion and Movement questions in AP Intermediate 1st Year Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Locomotion and Movement questions and exercises with answers

Showing questions 31–50 of 50.

In a resting muscle, which protein subunit hides the myosin-binding sites on actin?Read the answer and worked solution →The globular head of myosin works as an enzyme that splits:Read the answer and worked solution →After a hard run your muscles ache because they built up:Read the answer and worked solution →The red oxygen-storing pigment inside muscle is:Read the answer and worked solution →Bone matrix is very hard because of:Read the answer and worked solution →A U-shaped bone at the base of the mouth cavity, counted with the skull, is the:Read the answer and worked solution →The first vertebra, which meets the skull's occipital condyles, is the:Read the answer and worked solution →The last two pairs of ribs are not attached in front, so they are called:Read the answer and worked solution →The knee cap is a cup-shaped bone called the:Read the answer and worked solution →The collar bone is properly called the:Read the answer and worked solution →When a muscle moves a bone, the joint acts as the:Read the answer and worked solution →Skull bones fuse with sutures and cannot move. This joint type is:Read the answer and worked solution →The joint between the atlas and axis that lets you shake your head is a:Read the answer and worked solution →An autoimmune disease attacking the neuromuscular junction and causing weakness is:Read the answer and worked solution →Catch the axial bonesRead the answer and worked solution →Pop the synovial jointsRead the answer and worked solution →Steer into the muscle laneRead the answer and worked solution →Slice the bone wordsRead the answer and worked solution →Willed or automaticRead the answer and worked solution →Which muscle typeRead the answer and worked solution →

Worked practice questions

In a resting muscle, which protein subunit hides the myosin-binding sites on actin?

  1. Myoglobin
  2. Troponin
  3. Tropomyosin
  4. Meromyosin
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Correct answer: B. Troponin

1. Troponin sits at intervals along tropomyosin. 2. At rest one of its subunits covers the active sites. 3. So myosin cannot bind until calcium moves troponin. _Source: syllabus Biology, Chapter 20, Locomotion and Movement._

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The globular head of myosin works as an enzyme that splits:

  1. Glucose rings
  2. Lactic acid
  3. ATP molecules
  4. Glycogen chains
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Correct answer: C. ATP molecules

1. The myosin head is an active ATPase. 2. It has binding sites for ATP. 3. It hydrolyses ATP to power the stroke. _Source: syllabus Biology, Chapter 20, Locomotion and Movement._

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After a hard run your muscles ache because they built up:

  1. Lactic acid
  2. Uric acid
  3. Citric acid
  4. Amino acid
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Correct answer: A. Lactic acid

1. Repeated activation runs short of oxygen. 2. Glycogen breaks down anaerobically. 3. Lactic acid collects and causes fatigue. _Source: syllabus Biology, Chapter 20, Locomotion and Movement._

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