Which of the following elements is not particularly abundant in living cells?
a. carbon
b. hydrogen
c. helium
d. nitrogen
e. oxygen
C
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In Hodags (mythical creatures of Wisconsin), brown fur (B) is dominant over gray fur (b) and long horns (H) are dominant over short horns (h). Two true-breeding hodags, one with brown fur and long horns and the other with gray fur and short horns mate and produce an F1. Two F1 individuals are mated. What proportion of the offspring will exhibit a phenotypic combination that is different from the
P generation? Assume the genes for fur color and horn length are on different chromosomes. A. 1/2 B. 9/16 C. 3/16 D. 6/16 E. 1/16
The various uses of ATP include all of the following except
A) being a structural component of the cell membrane B) chemical work C) mechanical work D) transport work E) moving substances into a cell
What structure best represents a polymer?
A. an amino acid B. a monosaccharide C. a nucleotide D. a protein E. a fatty acid
The human immunodeficiency virus targets:
A) helper T cells. B) all white blood cells. C) bone marrow cells. D) lymph nodes.