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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
Who discovered cells and how?
Which part of the cell contains organelles?
State the difference between eukaryotes and prokaryotes
Which type of cell division is required for growth and repair of body and which type is involved in formation of gametes?
All life starts as _________.
A plant cell can be identified from an animal cell by the :
the question has four options. Choose the correct answer:
Mitochondria were first seen by
the question has four options. Choose the correct answer:
The cell was discovered by
Sketch and describe in your own words, the animal cell
I take part in food production of a cell. Who am I? ____
