What purpose do villi and microvilli serve in the small intestine?
What will be an ideal response?
The mucosa of the small intestine has villi and microvilli as adaptations to greatly increase surface
area for absorption.
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The movement of water across a membrane from an area of lower solute concentration to a region of higher solute concentration is called ____.
a. osmosis b. active transport c. endocytosis d. both diffusion and osmosis e. both osmosis and active transport
Why does skeletal muscle have a striated appearance?
A) dark color of myosin B) dense array of microtubules C) dense packing of ATP molecules D) regular arrangement of myofibrils
Humans have small mites that live in hair follicles and oil glands around the nose and eyelashes. What would you
need to know to classify them as exhibiting mutualism, commensalism, or parasitism? What will be an ideal response?
By the time pyruvate is formed, most of the energy contained in glucose has been released.
a. true b. false