The process of conversion of ammonia to nitrate is referred to as ________.
A. denitrification
B. nitrogen fixation
C. ammonification
D. nitrification
Answer: D
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In tigers, a recessive allele causes a white tiger (absence of fur pigmentation). If one phenotypically normal tiger that is heterozygous is mated to another that is phenotypically white, what percentage of their offspring is expected to be white?
A) 50% B) 75% C) 0% D) 100% E) 25%
Which of the following comparisons between the moss life cycle and fern life cycle is NOT valid?
A. Both kinds of plants have flagellated sperm that need water to reach the female gamete. B. The sporophyte generation is much larger than the gametophyte generation in ferns but is smaller than the gametophyte generation in mosses. C. The spores are produced in capsules on stalks in mosses but in small structure called sori on the underside of leaves in ferns. D. Both kinds of plants depend on wind for dispersal of spores. E. The gametes are produced in gametangia in mosses but on the underside of leaves in ferns.
Which structure will form the outer layer of a bone? a. Yellow marrow b. Compact bone c. None of these choices
d. Spongy bone e. Red marrow
Lyme disease is only seen in people living in Lyme, Connecticut.
Answer the following statement true (T) or false (F)