The common species name of the virus is based on the
A. presence or absence of a nuclear membrane.
B. type of nucleic acid it contains.
C. disease the virus causes.
D. geographic area it is found.
C
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Which of the following statements is NOT a correct description of an advantage that seeds have over spores?
A. Seeds can remain dormant and survive unfavorable conditions. B. Seeds are produced in greater numbers than spores. C. Seeds are tougher and can resist abrasion better than spores. D. Seeds are more resistant to pathogens. E. Production of seeds does not require water as a medium for sperm transport.
In the formation of acetyl coenzyme A in aerobic respiration, NAD is __________ to NADH.
Fill in the blank(s) with the appropriate word(s).
The most ancient branching point in the phylogeny of animals is the one that distinguishes between having:
a. single cellularity and multicellularity. b. radial or bilateral symmetry. c. defined tissues or no tissues. d. growth by molting or by continuous additions. e. first gut opening develop into a mouth and first gut opening develop into an anus.
Which of the following is a parasitic worm that lives in the human rectum and moves out to the anus to lay eggs resulting in severe itching?
a) pinworms b) flukes c) Trichinella spiralis d) filarial worms e) tapeworms