Advertisements
Advertisements
प्रश्न
Distinguish between the following pairs of terms :
Centrosome and chromosome
Advertisements
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
Cells are the basic structural units of living organisms’. Explain
Who am I?
I am ATP producing factory
Give functions.
Plasma membrane
Give functions.
Lysosome
Name the part of the cell concerned with the following :
Liberation of energy
Name the part of the cell concerned with the following :
Synthesis of proteins
Match the item in column 'A' with those in column 'B'.
| Column A | Column B |
| (a) Vacuoles | (i) Intracellular digestion |
| (b) Nucleolus | (ii) Respiratory enzymes |
| (c) Lysosomes | (iii) Covered by tonoplast |
| (d) Anthocyanin | (iv) Dissolved in the cytoplasm |
| (e) Cristae | (v) Forms RNA |
Fill in the blanks :
Very thin flexible, a living membrane which is differentially permeable, is called__________.
Fill in the blanks :
_______ are hereditary units.
State the major function of the following :
Plasma membrane
State the major function of the following :
Asters of centrosome:
Put a tick mark (✓) against the correct alternative in the following statement:
The organelle that controls all activities in
Put a tick mark (✓) against the correct alternative in the following statement:
The vacuole contains:
Fill in the blanks:
Muscles cells are ______ and contractile.
Write true or false for each statement. Rewrite the false statements correctly:
Ribosomes are the sites of respiration in a cell
Write a short answer.
Why is the cell membrane called selectively-permeable membrane?
Give one main function of the following:
Endoplasmic Reticulum
Analogy:
Plant organ: stem:: Animal organ: ______.
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:
Supportive framework for the cell.
