Some complex viruses have icosahedral symmetry in the head region and helical symmetry in the tail. Overall, these viruses are said to have ________ symmetry.
A. none of these
B. bilateral
C. binal
D. complex
Answer: C
Biology & Microbiology
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In the nineteenth century, prevailing beliefs came
into conflict with findings from all of these EXCEPT a. biogeography. b. comparative morphology. c. the fossil record. d. plate tectonics. e. global exploration.
Biology & Microbiology
The sex ratio in a population is usually fixed and does not vary among age classes
Indicate whether the statement is true or false
Biology & Microbiology
Covering only 6 percent of the land surface, tropical rain forests account for more than 50 percent of all known plant and animal species
Indicate whether the statement is true or false
Biology & Microbiology
In mammals, which of the following substances is produced in a muscle that operates anaerobically?
(A) Citrate (B) NADPH (C) Lactate (D) Oxygen
Biology & Microbiology