All crocodilians
a. live in or near water.
b. are predators with sharp teeth.
c. have a four-chambered heart.
d. have powerful jaws.
e. fit all of these descriptions
E
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The movement of some molecules and ions out of excretory system tubules and back into body fluids
is
a. reabsorption. b. release. c. filtration. d. secretion. e. diffusion.
A killing frost is an example of a density-independent factor. Indicate whether the statement is true or false
Aerobic training ____.
A. makes skeletal muscles more resistant to fatigue B. promotes break down of actin and myosin C. is fueled mostly by creatine phosphate D. produces muscle fibers that fatigue quickly E. makes skeletal muscles become rigid and stiff
Some bacteria are resistant to antimicrobials due to the activity of ________, which removes many of them
A) plasmids B) porins C) efflux pumps D) lipopolysaccharides E) ribosomes