Chromatin Structure | MCQs
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A. Chromosomes are long DNA molecules divided into sections called genes
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B. Chromosomes include a long molecule of DNA divided into sections called genes
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C. Chromosomes include genes which are divided into sections called DNA molecules
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D. Genes include long DNA molecules called chromosomes
Explanation
A chromosome is a long, thread-like structure made up of DNA, and within that DNA are smaller segments called genes.
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A. DNA and protein
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B. RNA and proteins
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C. DNA and RNA
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D. RNA and lipids
Explanation
A chromosome is typically made up of DNA and proteins, particularly histones, which help in the packaging of DNA.
نیوکلئس ______ کی موجودگی کی وجہ سے رنگ لیتا ہے؟
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A. Metal ions
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B. Lipid
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C. Thylakoids
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D. Chromatin
Explanation
The nucleus takes dyes due to the presence of chromatin.
It is a complex of DNA and proteins that make up the chromosome.
Chromatin is responsible for staining with basic dyes, such as hematoxylin and eosin.
They are commonly used in histology and cytology to visualize cell nuclei.
Chromatin is composed of:
- DNA (the genetic material)
- Histone proteins (which form a structure called a nucleosome)
- Non-histone proteins (which regulate gene expression and chromatin structure)
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