MCB 3020 EXAM | QUESTIONS AND ANSWERS | 2026 UPDATE | WITH COMPLETE SOLUTIONS 100% CORRECT

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MCB 3020 EXAM | QUESTIONS AND ANSWERS | 2026 UPDATE | WITH COMPLETE SOLUTIONS 100% CORRECT

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MCB 3020 EXAM 5 WITH QUESTIONS
AND ANSWERS 2026/2027 100%
CORRECT

What is margination in leukocyte migration? - ANSWER>Margination: weak interaction of leukocytes with

endothelial cells lining the blood vessel near the site of injury.

What is attachment in leukocyte migration? - ANSWER>Attachment: leukocytes bind tightly to wall.

What is diapedesis in leukocyte migration? - ANSWER>Diapedesis: leukocytes move between endothelial cells.

What is chemotaxis in leukocyte migration? - ANSWER>Chemotaxis: movement in tissue to injury.

What must recruited leukocytes do in damaged or invaded tissue? - ANSWER>Must clear the damaged or invaded

tissue from foreign particles.

, What are the two main functions of recruited leukocytes? - ANSWER>Perform 2 important functions: Phagocytosis

and Secretion of cytokines.

What are the 4 steps of phagocytosis? - ANSWER>1. attachment

2. internalization

3. degradation

4. exocytosis

What happens during attachment in phagocytosis? - ANSWER>Phagocytes attach to damaged and dead cells and

bacteria.

What enhances phagocytosis greatly? - ANSWER>Opsonins (opsonization).

What are opsonins? - ANSWER>Proteins (ex. antibodies) that bind tightly to the foreign material.

How much do opsonins increase engulfment and destruction? - ANSWER>4000 times faster engulfment and

destruction.

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Uploaded on: June 8, 2026
Number of pages: 10
Written in: 2025/2026
Type: Exam (elaborations)
Contains: Questions & answers

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