As a plant cell grows and matures, additional layers are added to the cell wall to construct the more rigid ____,

a. middle lamella
b. secondary cell wall
c. primary cell wall
d. plasma membrane
e. central vacuole


ANSWER: b

Biology & Microbiology

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Muscles that contract __________ will __________

and __________. a. isotonically; shorten; move a load b. isotonically; remain the same length; develop tension c. isometrically; shorten; move a load d. isometrically; remain the same length; move a load e. isometrically; shorten; decrease tension

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The human egg is swept through the oviduct toward the uterus by

A) the beating of the egg's cilia. B) rhythmic contractions of the oviduct. C) rhythmic contractions of the uterus. D) the beating of cilia in the oviduct.

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A microbiologist must culture a patient's feces for intestinal pathogens. Which of the following would likely be present in selective media for analyzing this fecal specimen?

A. thioglycolic acid B. sheep red blood cells C. bile salts D. peptone E. NaCl

Biology & Microbiology