Animal genes transferred into plant cells cannot be transcribed and translated into proteins
a. True
b. False
False
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Relative to enzymes in mesophilic microorganisms, which of the following is NOT characteristic of enzymes in psychrophiles?
A) decreased alpha helices B) decreased beta sheets C) less hydrogen bonds D) less ionic bonds
Chondroblasts produce ________
Fill in the blank(s) with correct word
Endosymbiosis proposes that
A) eukaryotic cells arose when a much larger prokaryotic cell engulfed smaller bacterial cells that eventually developed into organelles. B) two separate organisms can live in a symbiotic commensal relationship as long as one is a prokaryotic cell. C) two separate organisms can live in a symbiotic parasitic relationship as long as one is a prokaryotic cell. D) organelles formed in eukaryotic cells by invagination of cell membranes and insertion of DNA into the membrane-enclosed areas.
Cephalosporins and penicillins act on the cross-linkages in peptidoglycan. This usually results in
A) membrane breakdown. B) cell lysis. C) gram-positive cells becoming gram-negative. D) inhibition of protein synthesis.