Which of the following is NOT a factor that determines the immunogenicity of a molecule?
A) The route of the vaccination
B) The GC composition of a DNA
C) The size of the antigen
D) The shape of a protein
E) The concentration of a protein
Ans: B) The GC composition of a DNA
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Which of the following are bryophytes?
A. liverworts, ferns/horsetails, and gymnosperms B. liverworts, hornworts, and mosses C. lycophytes, liverworts, and gymnosperms D. mosses, hornworts, and lycophytes E. angiosperms, gymnosperms, and ferns/horsetails
Assume a double crossover occurs in this pair of chromosomes that results in chromatids of the genotypes A b C and a B c. If the first crossover (the one between A and B) involves chromatids 1 (A B C) & 4 (a b c), which chromatids could be involved in the second crossover?
Consider a pair of homologous chromosomes heterozygous for three genes (e.g. A B C / a b c) during prophase I of meiosis. Let the sister chromatids of one homolog be numbered 1 and 2; and the sister chromatids of the other homolog be numbered 3 and 4. A) 1 & 2 B) 3 & 4 C) 1 & 3 D) 2 & 4 E) 1 & 4 F) 2 & 3
What is the term that describes the ability of an individual to contribute to the gene pool of the next generation?
What will be an ideal response?
CO2 is a greenhouse gas because it:
A) increases the heat capacity of the stratosphere. B) causes the destruction of ozone in the near-surface atmosphere. C) traps short-wave energy near Earth's lower atmosphere. D) traps long-wave heat energy near Earth's lower atmosphere. E) increases the reflection of short-wave energy from the sun.