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प्रश्न
Write short notes on the following.
Nucleus of a cell
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उत्तर
Nucleus of a cell: The nucleus is a spherical structure generally present at the centre of a cell. The nucleus is composed of the following components:
1) Nuclear membrane: It is a double-layered membrane which separates the contents of the nucleus from the cytoplasm. The nuclear membrane has nuclear pores that allow the transfer of specific substances in and out of the nucleus.
2) Nucleolus: It is a small spherical body that is not bound by any membrane.
3) Chromosomes: These are thread-like structures that carry genes. Genes contain information necessary for the transfer of characteristics from the parents to the offspring. Thus, chromosomes play an important role in the inheritance of characteristics.
संबंधित प्रश्न
What is osmosis?
All life starts as _________.
State whether the following statement is true (T) or False (F):
Genes are located on a chromosome.
What is the name of the chemical substance which constitutes the genes?
Write a short answer.
Why is a cell called the structural unit of a living organism?
What is the function of the following?
Cell membrane
What is a chromosome?
the question has four options. Choose the correct answer:
Mitochondria were first seen by
Answer the following question.
Why is the cell called the structural and functional unit of life?
New cells are produced from the existing cells.
