Hyperplasia is the increase in fiber number sometimes seen in weight training.

a. true
b. false


a. true

Biology & Microbiology

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Toll-like receptors

A. are cytokines. B. each recognize a specific "danger" molecule. C. are embedded in cellular membranes. D. are part of adaptive immunity. E. each recognize a specific "danger" molecule AND are embedded in cellular membranes.

Biology & Microbiology

The concept of an ecosystem differs from that

of a community in that, unlike the community, the ecosystem includes the a. producers. b. decomposers. c. physical environmental factors. d. animals as well as the plants. e. parasites.

Biology & Microbiology

Simple epithelial cells of the renal tubule have abundant __________ to increase the surface area for

reabsorption and numerous __________ to provide energy for actively transporting materials. a. microvilli; mitochondria b. cilia; mitochondria c. microvilli; Golgi complexes d. cilia; Golgi complexes e. cilia; capillaries

Biology & Microbiology

The early evolution of higher apes and early ancestors of modern humans most closely resembles

A. two streams, Australopithecus and Homo, that merge into one lineage leading to humans. B. a straight-line vine with one main trunk and many unsuccessful short branches, with only one or two forms coexisting at any one time. C. a many-branched tree with all modern forms extending back relatively unchanged until reaching the common "missing link" at an origin about 33 million years ago. D. two main trunks leading to apes or humans, and where each newly advanced species of Homo immediately eliminated any coexisting hominids. E. a complex bush with many branches and perhaps as many as ten species of hominins 2 million years ago.

Biology & Microbiology