Which of the following is the organ of exchange between the mother and fetus?

A. allantois
B. yolk sac
C. placenta
D. chorion
E. amnion


Answer: C

Biology & Microbiology

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Which of the following molecules will contain an anticodon?

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A. true B. false

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Which was the first mammalian genome sequenced?

a. chimpanzee b. gorilla c. mouse d. human e. sheep

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As people age, they often have trouble seeing near objects. This farsightedness is treated by

A. cataract surgery. B. wearing concave lenses to refocus the image on the retina. C. wearing convex lenses to refocus the image on the retina. D. radial keratotomy. E. an unevenly ground lens to compensate for an uneven cornea.

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