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The movement of Ions against the concent...

The movement of Ions against the concentration gradient will be -

A

Active transport

B

Osmosis

C

Diffusion

D

All of these

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks about the movement of ions against the concentration gradient. This means we need to identify which transport mechanism allows ions to move from an area of lower concentration to an area of higher concentration. 2. **Analyzing the Options**: - **Option 1: Active Transport**: This process involves the movement of ions or molecules across a cell membrane against their concentration gradient. It requires energy, usually in the form of ATP, to move substances from a region of lower concentration to a region of higher concentration. - **Option 2: Osmosis**: This is a type of passive transport specifically for water molecules. It occurs across a semi-permeable membrane and moves from an area of lower solute concentration to an area of higher solute concentration, which is with the concentration gradient, not against it. - **Option 3: Diffusion**: This is another form of passive transport where molecules move from an area of higher concentration to an area of lower concentration, which is also with the concentration gradient. - **Option 4: All of these**: This option suggests that all the mentioned processes involve movement against the concentration gradient, which is incorrect based on the definitions of osmosis and diffusion. 3. **Conclusion**: Since only active transport involves the movement of ions against the concentration gradient, the correct answer is **Option 1: Active Transport**. **Final Answer**: Active Transport ---
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