Which one of the following amino acids is capable of forming a disulfide linkage?

A. tyrosine
B. cysteine
C. arginine
D. methionine
E. isoleucine


Answer: B

Biology & Microbiology

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Which organisms would MOST likely be isolated from aerobic growth conditions with acetate and a soil sample heated to 80 °C for 10 min?

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An example of a nonpolar signaling molecule is ____

a. epinephrine b. insulin c. testosterone d. growth factors e. neurotransmitters

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When one species feeds on another prey species, typically killing it, the relationship between the two interacting species is referred to as ________

Fill in the blank(s) with correct word

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The tiny stones in the vestibule, which move in response to gravity, are made of

A) calcium carbonate. B) iron oxide. C) magnesium. D) sodium chloride. E) calcium hydroxide.

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