Which muscle component is smallest?

A) myofibril
B) myosin filament
C) sarcomere
D) muscle fiber


B

Biology & Microbiology

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Pregnancy can cause which of the following abnormal curvatures of the back?

A) scoliosis B) kyphosis C) lordosis D) All of the answers are correct. E) None of the answers are correct.

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Vesicles are used for transport during which of the following?

a. endocytosis only b. exocytosis only c. phagocytosis only d. both endocytosis and exocytosis

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In the future, it may be possible to slow muscle

loss from diseases and aging by inhibiting myostatin production. However, which of the following might be adversely affected?

a. ligaments b. tendons c. heart muscle d. actin production e. ATP production

Biology & Microbiology

Why is the ratio of male to female births roughly 50:50?

a. half of all sperm cells carry a Y chromosome b. all eggs carry an X chromosome c. half of all egg cells carry a Y chromosome d. all sperm cells carry an X chromosome

Biology & Microbiology