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प्रश्न
A cell will swell up if
पर्याय
The concentration of water molecules in the cell is higher than the concentration of water molecules in the surrounding medium
The concentration of water molecules in surrounding medium is higher than water molecules concentration in the cell
The concentration of water molecules is same in the cell and in the surrounding medium
The concentration of water molecules does not matter
उत्तर
The concentration of water molecules in surrounding medium is higher than water molecules concentration in the cell
Explanation -
If a cell is placed in a solution containing higher concentration of water molecules than the concentration of water molecules in the cell (hypotonic solution), the cell will gain water by the process of osmosis (endosmosis). Although water molecules freely cross the cell membrane in both the directions but more water enters into the cell than leave and thus the cell swells up.
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संबंधित प्रश्न
Indicate whether the following statements are True (T) or False (F).
Amoeba has irregular shape. (T / F)
Which of these options are not a function of Ribosomes?
- It helps in manufacture of protein molecules
- It helps in manufacture of enzymes
- It helps in manufacture of hormones
- It helps in manufacture of starch molecules
Do you agree that “A cell is a building unit of an organism”. If yes, explain why?
Draw a plant cell and label the parts which
- determines the function and development of the cell
- packages materials coming from the endoplasmic reticulum
- provides resistance to microbes to withstand hypotonic external media without bursting
- is site for many biochemical reactions necessary to sustain life. (e) is a fluid contained inside the nucleus
Choose the correct statement with respect to unicellular organisms.
Identify the correct statement about cells.
The table given below has certain terms and four blank spaces named A, B, C and D.
| Cell | Feature/part | Function |
| Amoeba | A | Movement |
| Plant Cell | Plastid | B |
| C | Spindle shaped | Contraction |
| Nerve Cell | D | Stimuli and response |
From the options given below choose the correct combination of terms.
Fill in the blanks with the terms given in the box below :
| Nucleus | chromosomes | cell wall | cell membrane | protoplasm | cytoplasm | ribosome | cell organelles |
The outermost layer of plant cells is the __(a)____ beneath which is the __(b)____ The term ___(c)___ refers to the jelly-like substance containing all the ___(d)___ The __(e)____ contains thread-like structures called ___(f)___.
What structural and functional attributes must a cell have to be called a living cell?
Give two examples of stains which make the nucleus distinct.
