How many different species of Plasmodium cause malaria?
a. two
b. three
c. four
d. five
Ans: c. four
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What type of bonding is likely to occur between two water molecules or strands of DNA?
A. covalent. B. ionic. C. hydrogen. D. both hydrogen and covalent. E. both hydrogen and ionic.
The Hawthorne and apple maggot flies appear to have become reproductively isolated from each other largely becausethey:a
have different mating behaviors. b. mate at different times of the day. c. have adapted to two different hosts. d. occupy different parts of the habitat. e. do not share the same reproductive organs.
If you were to add one of the eight citric acid cycle intermediates to the culture medium of yeast growing in the laboratory, what do you think would happen to the rates of ATP and carbon dioxide production?
A) There would be no change in ATP production, but we would observe an increased rate of carbon dioxide production. B) The rates of ATP production and carbon dioxide production would both increase. C) The rate of ATP production would decrease, but the rate of carbon dioxide production would increase. D) Rates of ATP and carbon dioxide production would probably both decrease.
The most numerous, diverse, and widespread animals are the
A) Arthropoda. B) Mollusca. C) Annelida. D) Chordata.