| Direction: Q. 16 to 20 |
| Read the following and answer the questions from [16] to [20]. |
| Nucleus is the prominent, organelle present in cell which is the controlling centre of all activities of the cell. It is covered by nuclear membrane. |
| The nuclear membrane allow the transfer of material from inside the nucleus to its outside, that is, to the cytoplasm. There are chromosomes, rod shaped structures present in the nucleus which contain genetic information. |
| The nucleus plays a central role in cellular reproduction, the process by which a single cell divides and forms two new cells. It also plays a crucial part, along with the environment, in determining the way the cell will develop and what form it will exhibit at maturity, by directing the chemical activities of the cell. |
| It helps in the transmission of characters from one generation to the next. If the nucleus is removed from the cell, the protoplasm ultimately dries up and dries. |
A) acids and bases
B) mineral and bases
C) DNA and proteins
D) DNA and RNA
Correct Answer: C
Solution :
[c] Chromosomes are composed of DNA and protein.
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