Advertisements
Advertisements
Question
Define the following term:
Active transport
Advertisements
Solution
Active transport is the passage of a substance (salt or ion) from its lower to higher concentration through a living cell membrane using energy from the cell. Active transport is in a direction opposite to that of diffusion.
RELATED QUESTIONS
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
Fill in the blank with the suitable term given below:
The upward movement of sap that contains water and minerals is called _______ of sap.
Fill in the blank with the suitable term given below:
Most water gets evaporated from the plant from its __________.
Which experiment demonstrates the transport of food material in plants by phloem?
Active transport involves ______
Which of the following process requires energy?
What is 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.
