Brachiate primates include which animals?
a. human
b. gibbons
c. gorillas
d. chimpanzees
e. spider monkeys
b
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Isolates of coagulase-negative Staphylococcus from urinary tract infections can be presumptively identified as S. saprophyticus on the basis of its:
a. penicillin susceptibility. b. novobiocin resistance. c. penicillin resistance. d. novobiocin susceptibility.
Scientists believe that mitochondria may have evolved from ancient bacteria because ____
a. both are surrounded by a cell wall b. both have their own DNA and ribosomes c. the shapes and size of both are exactly the same d. both have cristae to increase surface area e. both have five chromosomes
When the body experiences stress, the sympathetic division of the autonomic nervous system stimulates the adrenal
medulla to release ____.
a. epinephrine only b. norepinephrine only c. knockout hormones only d. epinephrine and norepinephrine e. epinephrine, norepinephrine, and knockout hormones
According to the theory of endosymbiosis, the origin of chloroplasts probably involved:
A) the formation of colonies of cyanobacteria. B) the formation of cell walls around the photosynthetic pigments. C) engulfing of small photosynthetic prokaryotes by a larger cell. D) the accumulation of free oxygen in ocean waters. E) infolding of the cell membrane around circular pieces of DNA in the cytoplasm.