The __________ is the outermost extraembryonic membrane of the amniotic egg.

a. chorion
b. allantois
c. amnion
d. yolk sac
e. shell


Answer: a. chorion

Biology & Microbiology

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A. true B. false

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A selectively ________ membrane is one that allows some molecules to pass through but not others.

Fill in the blank(s) with the appropriate word(s).

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Identify the eight structures of the male reproductive system and indicate their functions.

What will be an ideal response?

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."A change over time" is the definition of

a. mutation. b. homeostasis. c. physiology. d. evolution. e. respiration.

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