Microfilaments such as actin, microtubules, and the intermediate filaments form the cell-supporting structure called the:
A. cytoskeleton.
B. cytoplasm.
C. nucleus.
D. plasma membrane.
Answer: A
Biology & Microbiology
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The space and fluid enclosed by the highly folded inner mitochondrial membrane is the
A. matrix. B. nucleus. C. stroma. D. outer membrane. E. cytoplasm.
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Isometric contractions result in generation of force, increase of muscle tension, and movement of a body part.
a. true b. false
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In the human, which of the following events would occur over the longest period of time?
a. sperm production b. cleavage c. fertilization d. gastrulation e. growth and tissue specialization
Biology & Microbiology