Means of Transport in Plants
Means of Transport in Plants: Overview
This topic covers concepts such as Comparison of Different Transport Processes, Active Transport in Plants, Diffusion, Facilitated Diffusion, Uniport Diffusion, Antiport Diffusion, Symport Diffusion, Porins, Aquaporins, etc.
Important Questions on Means of Transport in Plants
Name the proteins that facilitate the movement of the water across the membrane channel. (Aquaporins/Globulins)
_____ (Aquaporins/Desmosomes) regulate the movement of water across the membrane.
Which of the membrane channels helps in the transport of water in the plants.
Aquaporins only help in the transport of salts in the plant.
Fill in the blank with the correct option provided in the bracket.
The transport process that carries out downhill transportation of molecules like in simple diffusion but involves transport proteins is _____(active transport/osmosis/facilitated diffusion).
Which among the following are common to both facilitated diffusion and active transport.
Differentiate between simple diffusion and facilitated diffusion.
All simple diffusion does not require the involvement of transport proteins, but all facilitated diffusion requires transport proteins for the transportation of substances.
Which among the following statement is correct?
The vaporisation of water vapour in the atmosphere is an example of osmosis.
The diffusion of a substance in a system is influenced by the concentration of other substances in that system.
Osmosis is a special kind of diffusion, in which water diffuses across the cell membrane. The rate and direction of osmosis depend upon both pressure gradient and_____.
The porins are_____that form huge pores in the outer membranes of the plastids.
Water channel consists of how many types of aquaporins?
Porins are the lipid molecules that form large pores in the outer membranes of plastids, mitochondria and some bacteria.
Which of the following requires energy?
Which of the following criteria does not pertain to facilitated transport?
Characteristic of ion channels is/are _______.
A boy is studying the transport of a specific type of molecules into the cell. He finds that transport slows down when the cells are poisoned with a chemical that inhibits energy production. Under normal circumstances, the molecules studied by the boy is probably transported by
