Bacteria that are resistant to sulfonamide have enzymes that have a greater affinity for what?

a. PABA
b. Sulfonamide
c. Tetrahyrdrofolic acid
d. Tetracycline


Answer: a. PABA

Biology & Microbiology

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Which animal is used as an early warning system for encephalitis?

A. armadillos B. mice C. chickens D. foxes

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Which of the following evidence obtained from fossil studies is generally accepted as marking the beginning of the hominids? 

A. large brain development B. walking upright C. bipedalism D. development of lower limbs longer than forelimbs E. manufacture and use of tools

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A common term for the disease tetanus is

a. muscular dystrophy. b. sarcoma. c. lockjaw. d. botulism. e. myofibrosis.

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The source of the atmospheric oxygen necessary for the development of oxidative metabolism is thought to have been

a. glycolysis. b. the big bang. c. the breakdown of ATP. d. photosynthesis.

Biology & Microbiology