The structural features of the small intestine that enable the absorption of nutrients are the

A. capillary beds.
B. rugae.
C. appendix.
D. microvilli.


Answer: D

Biology & Microbiology

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Mutations in which of the following genes lead to transformations in the identity of entire body parts?

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Where are oocytes produced?

A. uterus B. cervix C. vagina D. ovary E. fallopian tube or oviduct

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Plants require a lot of water for transpiration, metabolism, and photosynthesis.  How is water used in photosynthesis?

A. as a substrate for ATP synthase B. to combine with NADP+ to form NADPH C. to combine with ADP forming ATP D. as an electron donor E. as an electron acceptor

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In order to disperse water throughout themselves more effectively, plants evolved

A. pores. B. high pressure in their roots. C. circulatory systems. D. vascular systems.

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