Organisms that can manufacture their own chemical energy are called ________.
A. oligotrophs
B. heterotrophs
C. autotrophs
D. chemotrophs
Answer: C
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Which group of organisms is most likely to have mercury or some other organic pesticides in its tissues in a high quantity?
a. Moss b. Clams c. Algae d. Polar bears e. Sardines
In arthropods, locomotion is accomplished by muscles that work against
A. each other. B. mineralized bones. C. a hydrostatic skeleton. D. the exoskeleton. E. the pseudocoel.
The development of a hard chancre (an ulcerated sore with hard edges) is indication of what type of STD?
A. yeast infection B. papillomavirus C. hepatitis D. syphilis E. gonorrhea
The common term for the action of transferring pollen grains from an anther onto a stigma is:
a. pollination. b. fertilization. c. reproduction. d. intercourse. e. None of the above is correct.