The earliest known mineralized structures in vertebrates are associated with _____
A) feeding
B) locomotion
C) defense
D) respiration
A
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The decrease or loss of virulence of a pathogen is referred to as
A) aging. B) attenuation. C) disinfectivity. D) lethal dose.
Why are red algae found in deeper oceanic waters?
A. They possess pigments that allow them to utilize red light. B. They are able to utilize the more saline deep water. C. Red algae prefer the warmer deep water. D. They possess pigments that allow them utilize blue-green-light. E. Fewer algae predators are found in deeper water.
All of the following are examples of how animals gain water EXCEPT
a. metabolism. b. foods. c. drink. d. evaporation.
A test for metal toxicity looks at the amount of metal present in the red blood cell membrane. How long ago could metal poisoning have occurred and still be found in the cell membrane?
A. a few days B. a week C. 6 months D. 3 months E. a month