Menstrual flow results in the discharge of ____

a. the follicle
b. the corpus luteum


c. the lining of the uterus
d. surface cells from the vagina
e. blood from the blood vessels on the outer surface of the uterus


ANSWER: c

Biology & Microbiology

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Which of the following species' range has extended extensively over the past 100 years?

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Refer to the accompanying figure. Which structure is from a different germ layer than the rest?

a. 2 b. 3 c. 6 d. 7 e. 8

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Unlike other microbes, archaea are able to thrive:

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In all vertebrates, the brain consists of the

A) cerebrum, forebrain, and hindbrain. B) cerebrum, midbrain, and hindbrain. C) forebrain, midbrain, and hindbrain. D) cerebrum, cerebellum, and hindbrain.

Biology & Microbiology