The Portuguese man-of-war is a colony of hundreds to thousands of:
a. sea anemones
b. ctenophores
c. hydrozoans
d. jellyfish
e. sponges
c
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Sensory neurons are involved in all of the following except:
A. taste. B. vision. C. movement. D. hearing.
Which of the following statements about hormone effects on behavior is not accurate?
A. Hormones are secreted into the circulation and thus have wide-ranging targets. B. Hormones can affect multiple cells in the target simultaneously. C. Compared to hormone action, neurons are much less specific in their actions. D. Target tissues must have receptors for a particular hormone in order for a response to be elicited. E. Hormone-mediated responses may be different between the sexes.
Which organisms have exoskeletons?
a. earthworms b. humans c. sea anemones d. insects and clams e. amphibians
Boris has many tattoos and has recently started having a yellowish tinge to his skin. What should he be tested for before he donates blood?
A) HIV B) cirrhosis C) hepatitis D) Helicobacter pylori