Which of these is the smallest structure?

A. Dipeptide
B. Protein
C. Polypeptide
D. Amino acid


Ans: D. Amino acid

Biology & Microbiology

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The competitive exclusion principle states that _____

A) it is not possible for two species with the same niche to coexist in the same region B) it is not possible for two species to compete for the same resources C) two species with different niches will not compete for the same resources D) two species with the same niche will constantly be competing for resources

Biology & Microbiology

Codons are part of the molecular structure of _____

A) a protein B) mRNA C) tRNA D) rRNA

Biology & Microbiology

Tapeworms are most commonly found in persons who

a. eat undercooked rice. b. walk barefoot in a rice field. c. eat undercooked pork. d. are bitten by mosquitoes. e. are bitten by ticks.

Biology & Microbiology

Predators often avoid a mimic species because of ____

a. bad taste b. toxic secretion c. resemblance to a well-defended species d. painful sting e. cryptic coloration

Biology & Microbiology