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Question 531
Biochemistry → General
Classification
Question
SSBAQuestion Header
Which pairing correctly matches a cell possessing secretory lysosomes with material contained within those lysosomes?
Question Stem
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Options
A
Melanocyte — perforin and granzymes
B
Mast cell — melanin
C
Natural killer cell — serotonin
D
Cytotoxic T lymphocyte — melanin
E
Cytotoxic T lymphocyte — perforin and granzymes
Explanation
Secretory lysosomes occur in specialised cells. Cytotoxic T lymphocytes and natural killer cells contain perforin and granzymes, melanocytes contain melanin, and mast cells contain serotonin.
Option Validity
A) Melanocyte secretory lysosomes contain melanin rather than perforin and granzymes.
B) Mast-cell secretory lysosomes are associated with serotonin rather than melanin.
C) Natural killer cells are associated with perforin and granzymes rather than serotonin.
D) Cytotoxic T lymphocytes are associated with perforin and granzymes rather than melanin.
Further Reading
Richa Saxena. Textbook for MRCOG-1: Basic Sciences in Obstetrics & Gynaecology. Biochemistry and Nutrition — Biochemistry — Secretory lysosomes. Printed page 126.