What role is played by the hormone insulin?
a. regulating body response to stress
b. regulating metabolic rate
c. maintaining blood glucose homeostasis
d. stimulating follicles in the female reproductive system
c. maintaining blood glucose homeostasis
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At what depths is the abyssal zone?
a. 1000 meters or greater b. 100 meters or greater c. 4000 meters or greater d. 10,000 meters or greater
The seeds with heavy, waxy coats and air sacs are
likely dispersed by a. animals. b. water. c. wind. d. propulsion from the plant. e. none of these.
What is the difference between neurotransmitters and neuropeptides?
a. Neuropeptides are generated by neuronal cells but do not transmit signals. b. Neurotransmitters are small hydrophilic molecules and neuropeptides are small proteins. c. Neurotransmitters are small protein molecules and neuropeptides are large ones. d. Some neuropeptides can act on distant cells, whereas neurotransmitters cannot.
Which of the following pairs is mismatched?
A) Neisseria meningitidis — produces deadly endotoxins B) Haemophilus influenzae — virulence due to capsule C) Mycobacterium leprae — cultured in armadillos D) Cryptococcus neoformans — acid-fast rod E) Naegleria fowleri — causes amoebic encephalitis