The nucleus of an atom is composed of two subatomic particles, ________ and ________.

A. protons; electrons
B. neutrons; electrons
C. protons; neutrons


Answer: C

Biology & Microbiology

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The process by which organisms maintain a stable internal environment in the face of a fluctuating external environment is called

A. metabolism. B. cellular respiration. C. growth and development. D. homeostasis. E. functional proteomics and genomics.

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What cells in nervous tissue carry electrical signals?

A. neurons B. Schwann cells C. myelins D. neuroglia E. synapses

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The most direct way to detect Down Syndrome in a fetus is by ___________. Fill in the blank(s) with the appropriate word(s)

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A group of tissues working together for a common purpose is known as a(n) ________

Fill in the blank(s) with correct word

Biology & Microbiology