Echinoderms are unique in their (choose all that apply)
A. five-fold symmetry.
B. skeletons made of interlocking plates of
protein.
C. water vascular system.
D. Skeletons made of interlocking plates of
calcite
E. Filter feeding
A,C,D
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A 36-year-old emergency medical technician (EMT) is exposed to a patient with brucellosis. Blood cultures are drawn from the EMT and reported as negative after 1 week. Which of the following statements explains this discrepancy?
a. The blood culture system is most likely not correctly functioning. b. Brucella does not grow in the blood. c. The blood culture bottles are most likely expired. d. The blood should have been incubated for a minimum of 3 weeks.
________ utilize pre-assembled organic molecules, while _______ do not require preassembled organic molecules
Fill in the blank(s) with the appropriate word(s).
________________ is released from the posterior pituitary gland, acts slowly, and regulates the rate at which the body loses water through the kidneys.
A. Epinephrine B. Norepinephrine C. Antidiuretic hormone D. Testosterone
In regards to altruism, what way are humans like vampire bats?
A. They engage in reciprocal altruism. B. Their altruism is based on kin selection. C. Their altruism is based on haplodiploidy. D. They are both Chiroptera.