In recent years, several new vaccines have been de

Question 1 of 5

In recent years, several new vaccines have been developed that are made from purified viral surface proteins, rather than intact or live viruses. They are referred to as subunit vaccines. In order to generate a protective adaptive immune response to a subunit vaccine, the viral protein(s) must be mixed with an adjuvant. The adjuvant functions to:

A. Mimic the process of normal virus entry by binding to the host receptor and inducing receptor-mediated endocytosis B. Induce vascular permeability to promote the accumulation of fluid and serum proteins at the vaccine injection site C. Induce the production of chemotactic proteins that recruit neutrophils and then monocytes to the site of vaccine injection D. Stimulate dendritic cells to up-regulate co-stimulatory molecules and migrate to the regional lymph node

Correct Answer: D

Rationale: Adjuvants activate DCs for co-stimulation and lymph node migration ; not entry , permeability , or just chemotaxis .

Question 2 of 5

The human retina contains rods and cone which are able to

A. convert the photo power to the chemical power B. absorption of ultraviolet C. convert photo power to electrical form and send action potentials to the brain D. absorption of infrared

Correct Answer: C

Rationale: Rods and cones convert light (photo power) into electrical signals (action potentials) sent to the brain, not chemical power or UV/infrared absorption.

Question 3 of 5

A primary immune response is

A. the immune response elicited by the primary antigen of a disease-causing microorganism B. the immune response elicited by the primary antibodies of a disease-causing microorganism C. the immune response elicited by the first exposure of lymphocytes to a particular antigen D. the immune response elicited by the first exposure of memory cells to a particular antigen

Correct Answer: C

Rationale: The primary immune response occurs upon first antigen exposure, activating lymphocytes, not memory cells (secondary response).

Question 4 of 5

Anaphylactic shock is an example of an

A. autoimmune disease B. immunodeficiency disease C. allergic response D. acquired autoimmune disease

Correct Answer: C

Rationale: Anaphylactic shock is a severe allergic reaction, not autoimmune, immunodeficiency, or acquired autoimmune.

Question 5 of 5

An example of a cytokine produced by activated macrophages with a major role on the innate immune response is:

A. IL-2 B. TNF C. IL-4 D. IL-17

Correct Answer: B

Rationale: TNF (tumor necrosis factor) from macrophages drives innate inflammation, unlike IL-2 (T cell growth), IL-4 (Th2), or IL-17 (Th17).

Nurselytic

ATI RN

ATI RN

Lymphatic System Questions Questions

Question 1 of 5

Question 2 of 5

Question 3 of 5

Question 4 of 5

Question 5 of 5

Access More Questions!

ATI RN Basic

ATI RN Premium

Similar Questions