All echinoderms are found:a
in marine habitats.
b. in freshwater.
c. on land.
d. on the bottom of the ocean or lakes.
e. in shallow ocean waters.
a
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A new organism was found that was unicellular and 1 cm long. The "large" size of this organism alone would
A. mean that it could not be a bacterium. B. mean that it had to be a protista. C. mean little. D. mean that it had to be in the domain eukarya.
Water is important to the interactions of
biological molecules because it a. promotes hydrophobic and hydrophilic interactions. b. stabilizes temperature. c. is an excellent solvent for polar and ionic substances. d. has strong cohesive properties. e. does all of these.
Glucagon is produced by the
a. adrenal cortex. b. adrenal medulla. c. thyroid. d. kidneys. e. pancreas.
Type 2 diabetes is caused by:
a. too much insulin in the blood. b. too little insulin in the blood. c. too much glucagon in the blood. d. too little glucagon in the blood. e. receptors being insensitive to insulin.