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HESI LPN · HESI LPN Medical Surgical Nursing · HESI Basic Immune System Quizlet

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

The C3 convertase is

A. An opsonin facilitating the phagocytic process

B. Part of the Membrane Attack Complex (MAC) that leads to lysis of targets

C. An enzyme able to cleave C3

D. An inhibitor of C3b

Expert Explanatory Rationale

Correct Answer: An enzyme able to cleave C3

Question 2 of 5

In order to grow, all microorganisms require:

A. liquid water

B. organic substances

C. oxygen

D. warm temperatures

Expert Explanatory Rationale

Correct Answer: liquid water

Question 3 of 5

Lymphokines are protein substances produced in small amounts by lymphocytes and move from cell to cell carrying message through the immune system. The most common lymphokine is:

A. Vaccine

B. Antigen

C. Antibody

D. Interferon

Expert Explanatory Rationale

Correct Answer: Interferon

Question 4 of 5

Which photosynthetic pigments are found in all prokaryotic and eukaryotic photoautotrophs?

A. chlorophyll c

B. carotenoids

C. phycobilins

D. phycocyanin

Expert Explanatory Rationale

Correct Answer: carotenoids

Question 5 of 5

Which of the following is not required for full activation of a naÃƒÂ¯ve lymphocyte?

A. Migration into an inflammatory site

B. Costimulatory signalling

C. Cytokines

D. Recognition of specific antigen

Expert Explanatory Rationale

Correct Answer: Migration into an inflammatory site

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