True/False  Mutation was caused by the antibiotic. [a] True/False  Natural selection in bacteria occurs when a genetic mutation provides a reproductive advantage over organisms that do not have the mutation. [b]

A 45-year-old man with pulmonary tuberculosis has bacteria surviving inside macrophages. Which adaptive immune response is most important for controlling this infection?

Which of the following is an example of a microbe? [a] In prokaryotes, where in the cell is the DNA located? [b]

Identify this molecule. [a] What is the function of this molecule? [b]

A physician explains that vaccines work by generating long-term immune memory without causing disease. Which lymphocyte population is primarily responsible for rapid antibody production after future exposure?

A patient treated with an immune checkpoint inhibitor for metastatic melanoma develops autoimmune colitis. Which mechanism of peripheral tolerance has most likely been disrupted?

A child develops generalized urticaria and wheezing within minutes of eating peanuts. Which immunologic mechanism initiated this reaction?

The accidental change in the DNA sequence is called what? [a] The process by which individuals that are better suited to their environment survive and reproduce more successfully is known as _______________. [b] Which of the following scientist went on a 5 year voyage in the HMS Beagle? [c]

The algae in the lichen is able to undergo photosynthesis.

A patient with depression begins taking a probiotic formulation containing Lactobacillus and Bifidobacterium. According to the lecture, the primary goal of this therapy is to: