A naïve lymphocyte ____
a. is bound directly to an antigen
b. has not yet bound to antigen
c. is an antigen-presenting cell
d. is a phagocyte
e. is inflammatory
ANSWER: b
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Proteins that bind to acetylated lysine residues in the histone tail contain:
A. bromodomains. B. DNA-binding domains. C. chromodomains. D. kinase domains. E. histone-fold motifs.
Large amounts of oxygen gas first appeared in Earth's atmosphere about ________ years ago
A) 500,000 B) 10 million C) 2.7 billion D) 3.5 billion
If the frequency of one allele in a population is 0.7 in a population with two alleles at a particular locus, what is the frequency of the alternate allele?
A) 0.09 B) 0.21 C) 0.30 D) 0.42
DNA replication is
A) error prone. B) the process a cell uses to make protein. C) the exact same for prokaryotes and eukaryotes. D) going to result in relatively few mutations. E) slow.