is an energy dependent process that moves molecules across a membrane against its concentration gradient.

Osmosis

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Active transport

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Diffusion

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Solution

The correct option is B Active transport
Active transport is the movement of molecules across a membrane from a region of their lower concentration to a region of their higher concentration. Since this movement takes place against the concentration gradient, it requires energy.

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Similar questions

Q. Assertion :Diffusion is a passive type of transport. Reason: Osmosis is an active process of membrane transport.

Q. Short / Long answer type questions.
The small molecules of gases and water can readily, diffuse.across a membrane based
on diffusion gradients. Other molecules move against a gradient due to specific carriers that use energy for active transport. How could a cell move a variety of molecules, such as CV, against a gradient without having a specific transport system that actively moves this molecule?

The following list indicates certain molecules/ions and their mechanism of transport across the cell membrane. Determine the correct pair(s) from the list.

I. Diffusion - $N a^{+}$

II. Active transport - Amino acids

III. Osmosis - Water

IV. Facilitated diffusion - Glucose

Q. When a cell expands energy to move a solute across its membrane against a concentration gradient, this process is called ..........

Assertion (A): Active transport is uphill transport.

Reason (R): Active transport uses energy to pump molecules against its concentration gradient.

Choose the correct option.

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is an energy dependent process that moves molecules across a membrane against its concentration gradient.

The correct option is B Active transport Active transport is the movement of molecules across a membrane from a region of their lower concentration to a region of their higher concentration. Since this movement takes place against the concentration gradient, it requires energy.

The correct option is B Active transport
Active transport is the movement of molecules across a membrane from a region of their lower concentration to a region of their higher concentration. Since this movement takes place against the concentration gradient, it requires energy.