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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.
State the main function of the Guard cells
Name the following:
The wax-like layer on the epidermis of leaves which reduces transpiration.
Fill in the blank with the suitable term given below:
The leaves have more__________ on their lower surface.
How water absorbed by the roots is important for the plants?
Differentiate between the following
Active transport and Passive transport.
Name the following:
Movement of ions from the region of lower concentration to higher concentration by using energy (ATP).
The process for which energy is required is ______.
Active transport is one in which the ions outside the roots move in by utilising ______.
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.
