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प्रश्न
Explain the term Active transport.
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उत्तर
It is the movement of salt or ions across a cell membrane from a lower to a higher concentration by the use of energy.
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संबंधित प्रश्न
Describe the role played by protein pumps during active transport in plants.
Active Transport and Diffusion [Significance in plants]
The Biological/technical term for The process of uptake of mineral ions against the concentration gradient using energy from the cell
Name the following:
The wax-like layer on the epidermis of leaves which reduces transpiration.
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is the following statement true (T) or false (F)? Mark T or F
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Differentiate between the following
Active transport and Passive transport.
Active transport involves ______
In a passive transport across a membrane, when two different molecules move in opposite direction and independent of each other, it is called as ______.
Three cylinders of potato were carefully dried on blotting paper and weighed. Each piece weighed 3 grams. Each one was placed in the beaker as shown below:
Answer the following questions:
- After 48 hours, which potato cylinder would be the heaviest?
- The movement of which substance is mainly responsible for the weight change in the potato cylinders?
- Name and define the process which is responsible for the movement of the substance mentioned in answer (b).
- Write specific names of the processes which occur in beakers B and C. [kinds of processes defined in answer (c)].
- Would there be any difference in the weight of the potato cylinder in beaker A after 48 hours? Give reason.
