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प्रश्न
Active transport involves ______
विकल्प
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.
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संबंधित प्रश्न
Describe the role played by protein pumps during active transport in plants.
Fill in the blank with the suitable term given below:
Most water gets evaporated from the plant from its __________.
Active transport is in a direction ______ to that of diffusion.
Name the following:
Movement of ions from the region of lower concentration to higher concentration by using energy (ATP).
Which of the following process requires energy?
Pumps are related to
In a passive transport across a membrane, when two different molecules move in opposite direction and independent of each other, it is called as ______.
What is Active transport?
Define the following term:
Active transport
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.
