Studies indicate that in utero nicotine exposure can cause breathing abnormalities in neonatal
mammals. These abnormalities can include
a. elevated breathing rate while awake.
b. increased frequency of apneas during sleep.
c. delayed arousal from sleep in response to hypoxia.
d. elevated breathing rate while awake and increased frequency of apneas during sleep.
e. increased frequency of apneas during sleep and delayed arousal from sleep in response to
hypoxia.
E
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A commercial fisherman is very concerned that overfishing will result in a decrease in tuna population size, thus affecting his catches in future years. What strategy can he employ to make sure that the tuna population can be sustained in the long term?
A. He can only catch young, non-reproducing fish. B. He can only catch old fish (past the reproductive age). C. He can only catch fish at the reproductive age.
In some fish, fertilized eggs develop and hatch inside the mother's body before the offspring are released to the exterior. This is an example of ____
a. oviparity b. viviparity c. ovoviparity d. budding e. fission
A skeleton that consists of a fluid-filled closed chamber that muscles act against is called a(n) ________
a. hydrostatic skeleton b. cytoskeleton c. exoskeleton d. endoskeleton
While walking in the woods, a student encounters a brightly colored organism with a flat, branching structure growing on a decaying branch. Back in the laboratory, she finds it contains continuous cytoplasm with no clear cell boundaries and hundreds of nuclei. This organism is most likely a _____.
Fill in the blank(s) with the appropriate word(s).