A segment of DNA that codes for a functional product is a(n)
A. genetic code.
B. gene.
C. codon.
D. anticodon.
Ans: B. gene.
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Which of the following molecules are outputs of the Calvin-Benson cycle and inputs to the light-dependent reactions?
a. ATP and NADPH b. glucose c. CO2 d. ADP and NADP+
When cells are not responding to normal controls over
growth and division, they form a tissue mass known as a a. metastasis. b. malignancy. c. tumor. d. carcinogen. e. nucleosome.
Which of the following were probably factors that permitted early plants to successfully colonize land?
1. the relative number of potential predators (herbivores) 2. the relative number of competitors 3. the relative availability of symbiotic partners 4. air's relative lack of support, compared to water's support A) 1 and 2 B) 2 and 3 C) 3 and 4 D) 1, 2, and 3
_________ is NOT a function of a fat.
A. Providing insulation B. Storing energy C. Producing enzymes D. Shock absorption