39
Question
Identify the process by which substances are transported across cell membranes by means of protein carrier molecules?
Identify the process by which substances are transported across cell membranes by means of protein carrier molecules?
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Solution
The correct option is D Faciliated Transport
In Faciliated transport, substances are transported across cell membranes by means of protein carrier molecules from lower to higher concentrations.
Ions flow passively through ion channels/pumps, down electrical and concentration gradients, at speeds that can approach the diffusion limit.
Passive transport is a type of membrane transport that does not require energy to move substances across cell membranes.
Bulk transport is a type of transport which involves the transport of large amount of substance like lipid droplets and solid food particles across plasma membrane by utilising energy.
In Faciliated transport, substances are transported across cell membranes by means of protein carrier molecules from lower to higher concentrations.
Ions flow passively through ion channels/pumps, down electrical and concentration gradients, at speeds that can approach the diffusion limit.
Passive transport is a type of membrane transport that does not require energy to move substances across cell membranes.
Bulk transport is a type of transport which involves the transport of large amount of substance like lipid droplets and solid food particles across plasma membrane by utilising energy.
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