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Free OAT – Optometry Admission Practice Test Question

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Showing 13–15 of 15 questions

Question 13 (Survey of the Natural Sciences)

Which structure is responsible for a sperm cell's motility?

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    Cilia
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    Flagellum
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    Mitochondria
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    Acrosome
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    A & B
Question 14 (Survey of the Natural Sciences)

Which of the following statements is incorrect regarding the circulatory system?

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    Aorta is the heart’s largest blood vessel.
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    Blood passes from the left atrium to the left ventricle via the mitral valve.
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    Circulating lymph is picked up and returned to the lymphatic system.
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    The sinoatrial node is found in the right atrium.
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    All of the above are correct.
Question 15 (Survey of the Natural Sciences)

A mythical atom has isotopes: 10X, 11X and 12X with masses 10, 11, and 12 respectively. 10X has an abundance of 80%, 11X of 15% and 12X of 5%. What is the atomic mass of this X atom?

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  • ○

    10
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    10.25
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    10.75
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    11
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    11.25