Four of the five substances listed below are

polysaccharides. Select the exception.
a. chitin
b. cellulose
c. hemoglobin
d. starch
e. glycogen


Answer: c

Biology & Microbiology

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Which of the following statements about the electron transport chain in cell respiration is CORRECT?

A. Electrons move from NADH to a chain of proteins with lower electronegativities. B. The electron transport chain of proteins uses ATP to pump H+ across the inner mitochondria membrane against its electrochemical gradient. C. The loss in free energy of the electron initially donated by NADH is used to transport H+ across the inner mitochondrial membrane against its electrochemical gradient. D. The electron transport chain of proteins contains pores that are leaky to H+. E. The ATP synthase pump generates a H+ gradient across the inner mitochondrial membrane.

Biology & Microbiology

The muscles and nervous system of the fetus become mature enough for movement to occur by the ________ month of development

A) fifth B) first C) eighth D) third E) seventh

Biology & Microbiology

The edible portion of the mushroom is the ________

A) mycelium B) hypha C) spore D) above-ground reproductive structure

Biology & Microbiology

Plants take in the sun's energy by absorbing.

a) high-energy sugars. b) chlorophyll a. c) chlorophyll b. d) sunlight.

Biology & Microbiology