A mutation creates a deletion in the C-terminal region of the bacterial RecA protein of E. coli rendering it Rec-. It would be reasonable to surmise this mutation might:
A. increase autoinhibition of RecA.
B. increase RecA binding to DNA.
C. decrease autoinhibition of RecA.
D. be both A and B.
E. be both B and C.
E
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In a partially mixed estuary the salinity
a. is extremely variable from place to place. b. is stratified with lower salinity near the bottom. c. is lower than the ocean but relatively homogenous. d. increases with depth.
Oxytocin has specific effects on the
a. uterine musculature. b. voluntary muscles throughout the body. c. nervous tissue. d. target cells in the brain. e. target cells in the digestive tract.
Most animals seek to maximize the energy they obtain while minimizing their
A. energy expenditure. B. risk of predation and territory size. C. risk of predation. D. territory size. E. energy expenditure and risk of predation.
The best source of information regarding the hazards posed by any chemical and specific handling instructions is the
GOOGLE Material Safety Data Sheet (MSDS) lab manual