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प्रश्न
Distinguish between the following pairs of terms :
Centrosome and chromosome
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उत्तर
| Centrosome | Chromosome | ||
| (i) | It is a clear area of cytoplasm close to the nucleus, from which spindle fibres develop during cell division. | (i) | Chromosomes carry hereditary information or genes, which transmit genetic characters from parents to offspring. |
| (ii) | A centrosome is found only in an animal cell. | (ii) | Chromosomes are found in the nucleus of both animal and plant cells. |
| (iii) | These are found outside the nucleus. | (iii) | These are found inside the nucleus. |
| (iv) | It consists of centrioles and centrospheres. | (iv) | It consists of nucleic proteins and nucleic acids |
संबंधित प्रश्न
Where do the ribosomes get synthesized?
Write short note on the following :
(a) Golgi apparatus
(b) Mitochondria
Who am I?
I am single layered, but maintain cellular osmotic pressure.
Who am I?
Leaves are green because of me.
What would have happened? If.........
Genes had been absent on the chromosomes.
Give functions.
Nucleus
Name the part of the cell concerned with the following :
Synthesis of proteins
How many chromosome pairs are found in human cells?
Fill in the blanks :
Very thin flexible, a living membrane which is differentially permeable, is called__________.
What is the difference between an organ and an organelle?
Briefly discuss the importance of chromosomes to an organism
Fill up the blank with the terms given below
______ are filled with water and dissolved substance.
Fill in the blanks:
The ______ contains a network of thread-like structures called chromatin network.
Write true or false for each statement. Rewrite the false statements correctly:
Chromoplasts are the kitchen of the cell
Identify the cellular structure with the help of the following clue:
It is made up of lipoproteins.
Identify the cellular structure with the help of the following clue:
A non-living rigid layer surrounding the plasma membrane.
Identify the cellular structure with the help of the following clue:
It destroys foreign substances.
Identify the cellular structure with the help of the following clue:
It gives turgidity to the plant cells.
Define the following term:
Organelles
