SBA — Single Best Answer · Review
Question 532
Biochemistry → General
Classification
Question
SSBAQuestion Header
Immediately before mitosis, replication of which structure provides components involved in formation of the spindle responsible for chromosome movement?
Question Stem
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Options
A
Primary lysosome
B
Centriole
C
Peroxisome
D
Nucleolus
E
Golgi cisterna
Explanation
The centrosome contains two hollow cylindrical centrioles. Centrioles replicate before mitosis and participate in formation of the mitotic spindle involved in chromosome movement.
Option Validity
A) Primary lysosomes are Golgi-derived vesicles involved in intracellular degradation.
C) Peroxisomes participate in metabolic functions including fatty-acid oxidation and hydrogen-peroxide detoxification.
D) The nucleolus is a nuclear structure and is not the spindle-forming organelle described.
E) Golgi cisternae participate in processing and packaging rather than formation of the mitotic spindle.
Further Reading
Richa Saxena. Textbook for MRCOG-1: Basic Sciences in Obstetrics & Gynaecology. Biochemistry and Nutrition — Biochemistry — Centrosome. Printed page 126.