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Question 356
Physiology → Haematology
Classification
Question
SSBAQuestion Header
A lymphocyte participating in humoral immunity is actively synthesising immunoglobulin.
Question Stem
Which cellular structure directly performs this synthesis?
Options
A
Mitochondria
B
Ribosomes
C
Lysosomes
D
Nucleus
E
Dense granules
Explanation
B lymphocytes are concerned with humoral immunity through production of immunoglobulins. Immunoglobulins are made by ribosomes in lymphocytes.
Option Validity
A) Mitochondria are not identified as the structures producing immunoglobulins in lymphocytes.
C) Lysosomes do not perform the described immunoglobulin synthesis.
D) The nucleus contains genetic material but is not the cellular structure identified as making immunoglobulins.
E) Dense granules are described in platelets and are not the site of lymphocyte immunoglobulin synthesis.
Further Reading
Saxena. Textbook for MRCOG-1. Physiology - Haematology - Lymphocytes, p.70.