Viruses with single-stranded DNA are the
A) Herpesviruses
B) Poxviruses
C) Parvoviruses
D) Papovaviruses
E) Adenoviruses
C) Parvoviruses
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A sick person often has a fever, which can inhibit the growth of bacteria because
A) bacteria reproduce more rapidly at higher body temperature. B) enzymes do not function as well at temperatures other than the optimal temperature. C) the higher temperature increases the activity of lyases. D) sweating removes prosthetic groups from biological enzymes. E) fever blocks synthesis of proteins in the bacterial nucleus.
The production of chlorophyll molecules requires most plants to obtain __________ from the
soil.
a. calcium b. magnesium c. nitrogen d. potassium
Members of this phylum have radial symmetry, and use their two tentacles to capture prey. They have
eight longitudinal plates of cilia that they use for movement, making them the largest animals to use cilia as their primary means of locomotion.
a. Nematoda b. Cnidaria c. Porifera d. Rotifera e. Ctenophora
Refer to the paragraph on scarlet gilia. Late in the season, when only hawk moths were present, researchers painted the red flowers white. What would you expect?
A) Unpainted red flowers would produce more fruits than white flowers would. B) Red flowers painted white would produce more fruits than red flowers would. C) Red and white flowers would produce the same numbers of fruits.