A cell that has converted to a state of permanent cell cycle arrest is said to be in a state of ________.

a) sentience
b) senescence
c) satiety
d) totality


Ans: b) senescence

Biology & Microbiology

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What level(s) of protein structure could be affected by a nucleotide substitution that results in an amino acid change in a polypeptide? (Select all that apply.)

A) primary structure B) secondary structure C) tertiary structure D) quaternary structure E) There will be no structural changes.

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Protein synthesis inhibitors have a low therapeutic index because they usually cannot discriminate between prokaryotic and eukaryotic ribosomes.

Answer the following statement true (T) or false (F)

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The most toxic substances routinely found in the blood are metabolites of

a. carbohydrates. b. proteins. c. lipids. d. minerals. e. vitamins.

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When r = ?0.00057, the population size:a

will increase. b. will decrease. c. is stable. d. may increase or decrease, depending on K. e. may increase or decrease, depending on i.

Biology & Microbiology