Chat with us, powered by LiveChat BIOL 302 – Immunity that results when a person - Uni Pal

4. Immunity that results when a person is vaccinated to protect against seasonal influenza is

a. active artificially acquired immunity.

b. passive naturally acquired immunity.

c. active naturally acquired immunity.

d. passive artificially acquired immunity.

5. Which of the following infectious disease(s) has (or have) been eradicated in the world?

a. polio

b. measles

c. smallpox

d. whooping cough

e. all of the above

6. Which of the followings is a characteristic of prions that is unique from other known pathogenic microbes?

a. They lack the characteristics of a classic cell.

b. They can be transmitted from animals to man.

c. They cause permanent damage to the host.

d. They are made entirely of protein.

7. Which of the following is a characteristic of the adaptive immune response and not of the innate immune response?

a. Physical and chemical barriers

b. Clonal expansions of activated B cells

c. Inflammatory mediators

d. Phagocytosis

8. In the lab you use the Gram staining procedure, a differential staining technique, as a first step in identifying the type of bacteria on a slide. After you carefully perform the staining procedure, you look at the cells under the microscope and see pink rod shaped cells. This result indicates that

a. the cells have a thin peptidoglycan layer as part of the physical structure of the cell wall and are gram-positive bacilli.

b. the cells have a thick peptidoglycan layer as part of the physical structure of the cell wall and are gram-positive bacilli.

c. the cells have a thin peptidoglycan layer as part of the physical structure of the cell wall and are gram-negative bacilli.

d. the cells have a thick peptidoglycan layer as part of the physical structure of the cell wall and are gram-negative bacilli.

9. What does each codon in messenger RNA (mRNA) specify?

a. a nucleotide

b. an enzyme

c. an amino acid

d. a promoter

10. Viruses usually initiate infection by first interacting with receptors on the surface of cells. Which of the following statements is most accurate about cellular receptors for viruses?

a. Cellular receptors for viruses have no known function.

b. All viruses within a given family use the same cellular receptor.

c. Successful infection of a cell by a virus may involve the interaction with more than one type of receptor.

d. All cells in a susceptible host will express the viral receptor.

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