Insertions and deletions that occur in multiples of three nucleotides ________.

An RNA polymerase transcribes the bottom strand of the following DNA sequence. What will be the resulting mRNA molecule? 5’ ACTTTGAGACTAGATC 3’ 3’ TGAAACTCTGATCTAG 5’

In a different set of experiments, you identify two kinds of mutations in S. aureus. The first type of mutation makes the bacteria more susceptible to antibiotic X; the second type of mutation makes it more resistant to antibiotic X. In the absence of the antibiotic, which mutant would you expect to be more abundant?

________ describes the process whereby a leukocyte exits a blood vessel and moves into an infected region of tissue.  

A small child enters a clinic for the third time in one month with another bad skin infection filled with pus (tissue fluid combined with large numbers of bacteria growing in the fluid). Decreased numbers, or loss of function, in which of the following cell types could account for these symptoms?  

Which of the following describes an SNP?

When a foreign invader infects a human host, what is likely the first responder for the immune system?

How does a macrophage destroy a pathogen?

A person inhales a potentially pathogenic bacterium. What defenses will the bacterium encounter as it travels through the human body? (Mark all that apply.)

The job of a natural killer cell is to ________.