Which hormone lowers blood glucose levels?
A) Cortisol
B) Growth hormone
C) Insulin
D) Estrogen
E) Glucagon
C
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Parental care of offspring:a
for many animals has a lower cost than benefit. b. results in a decreased probability that each offspring will survive. c. is more common in species in which the female produces two or more times during a breeding season. d. is more common among male animals than among females. e. is more common among male fishes than among females.
The boreal forest biome does not contain deciduous trees. Indicate whether the statement is true or false
Which of the following is a challenge to the hypothesis that bats, which produce an unusually large number of sperm, increase the probability of conception when females engage in multiple matings? I) Female bats can eject the sperm of certain males
after mating. II) A female can actively choose which male mates with her last, thus increasing the odds of conception with that male's sperm. A) Only I is correct. B) Only II is correct. C) Both I and II are correct.
A neuron was stimulated with 0.075 volts, and no action potential occurred. Later, it was stimulated with 0.15 volts, and it fired an action potential. What conclusions can you draw from this?
Acetylcholinesterase levels were too high. The action potential threshold must be between 0.075 V and 0.15 V. Both of these stimuli are too weak to produce an action potential. All of the above