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प्रश्न
Active transport involves ______
पर्याय
movement of molecules from lower to higher concentration
expenditure of energy
it is an uphill task
all of the above
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उत्तर
Active transport involves all of the above.
APPEARS IN
संबंधित प्रश्न
Describe the role played by protein pumps during active transport in plants.
Active Transport and Diffusion [Significance in plants]
State the main function of the Guard cells
The Biological/technical term for The process of uptake of mineral ions against the concentration gradient using energy from the cell
Name the plant tissue which helps in carrying the food to different parts of a plant.
Fill in the blank with the suitable term given below:
The upward movement of sap that contains water and minerals is called _______ of sap.
How water absorbed by the roots is important for the plants?
Active transport is in a direction ______ to that of diffusion.
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.
