How many nucleotides are contained in a single codon?
A. 1
B. 3
C. 4
D. 6
E. 9
B. 3
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A population's ____ occurs under ideal, unrealistic conditions
a. per capita growth rate b. per capita population curve c. intrinsic rate of increase d. geometric population curve e. exponential population curve
Xylem sap mainly contains
(A) water and amino acids (B) water and sugar (C) sugar and minerals (D) water and minerals
A mixture of DNA fragments is amplified from a sample of ocean water. Which gene(s) could be definitively categorized as originating from a species of animal?
A. Genes for ATP synthase B. Cell cycle regulatory genes C. Gene for Spongin D. Genes for biosynthesis of chitin E. Genes for RuBisCO
Oysters are classified in the phylum
A) Echinodermata. B) Mollusca. C) Annelida. D) Platyhelminthes. E) Arthropoda.