Chemical analysis of an unidentified compound isolated from cells showed the presence of carbon, hydrogen, oxygen, nitrogen, and sulfur. This unknown compound is most likely a
A. nucleic acid.
B. lipid.
C. carbohydrate.
D. protein.
Answer: D
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Which phase of meiosis is illustrated in this diagram?
a. prophase
b. prometaphase
c. prophase I
d. prometaphase II
Chlorophyll:a
reflects red and blue light, and absorbs green light. b. transmits red and blue light, and absorbs green light. c. transmits red and blue light, and reflects green light. d. absorbs red and blue light, and reflects green light. e. absorbs red, blue, and green light.
When the size of a population greatly exceeds K, it would be expected the population will:a
rapidly increase. b. slowly increase. c. slowly decrease. d. rapidly decrease. e. stabilize.
For persons with a certain types of heart defects, including artificial valves or a history of infective endocarditis, antibiotics are often prescribed prior to dental procedures to prevent possible infection. This strategy would be best described as
A) Combined antimicrobic therapy B) Synthetic therapy C) Synergy D) Prophylaxis