Which of the following is an example of an herbivore?
a. an earthworm
b. a sheep
c. a human
d. a pig
e. a fish
b
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The cell walls of most fungi are composed of
A. chitin. B. cellulose. C. dentine. D. peptides. E. glycerol.
During an action potential, sodium ions move into the cell through ____
a. leaky channels b. glial cell extensions c. transport pumps d. gated channels e. osmosis
This British clergyman and economist was one of the first to recognize that the human population
cannot continue to increase indefinitely:a. Malthus b. Gause c. Schoener d. Peterson e. Hastings
Sometimes, chemical damage to DNA can occur just before DNA replication begins, not giving the repair system enough time to correct the error before the DNA is duplicated. This gives rise to mutation
If the cytosine in the sequence TCAT is deaminated and not repaired, which of the following is the point mutation you would observe after this segment has undergone two rounds of DNA replication? (a) TTAT (b) TUAT (c) TGAT (d) TAAT