The hormone most directly responsible for endometrial maturation is _______.

A. luteinizing hormone
B. follicle-stimulating hormone
C. progesterone
D. estrogen


Answer: C. progesterone

Biology & Microbiology

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The effectiveness of geographic barriers in

promoting speciation is related most to a. the size of the barrier. b. the inability of the organisms to overcome the barrier. c. the speed at which the barrier forms. d. how long the barrier exists. e. the size of the population it separates

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Which blood test must be interpreted based on gender?

a. BUN b. lipid profile c. ALB d. AMT e. A1C

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The distribution of biomes is dependent upon which of the following? Check all that apply. 

_____ available moisture _____ temperature _____ the presence of mountains  _____ distance from the oceans and elevation _____ a thermocline

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A lioness begins her nightly hunt after spending the day beneath a tree in the Serengeti. What happens to the blood vessels in her body as she goes from resting to hunting?

A. Arterioles supplying her stomach and intestines contract. B. Arterioles supplying her stomach and intestines expand. C. Arterioles supplying her limb muscles contract. D. Arterioles supplying her limb muscles expand.

Biology & Microbiology