________ arrays are used to assess the diversity of a microbial population.
Fill in the blank(s) with the appropriate word(s).
Community genome
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Which of the following benefits to humans is NOT attributable to phenolics?
A. antioxidants in red wine B. the flavor of vanilla C. absorption of ultraviolet radiation D. the sweetness of honey E. the taste of chillies
Human cells produce perhaps as many as 100,000 different proteins, and yet the human genome has
only about 20,000 genes. This is best explained by
a. aminoacylation. b. exon shuffling. c. the wobble hypothesis. d. degeneracy. e. alternative splicing.
A negative feedback system is designed to set off mechanisms that will:a
lower the abnormal value until it reaches its normal level. b. increase the abnormal value until it reaches normal levels. c. return the system to steady-state levels. d. speed up the body's response until it reaches its normal levels. e. slow down the metabolic rate until steady-state levels are reached.
Interleukins and erythropoietin are
a. growth factors. b. Cdk's. c. cyclins. d. antitumor agents. e. intracellular signaling molecules.