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Diffusion of a molecule from low concent...

Diffusion of a molecule from low concentration to the high concentration

A

can take place

B

can't take place

C

take place in presence of proteins

D

It is irrelevant

Text Solution

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The correct Answer is:
To solve the question regarding the diffusion of a molecule from low concentration to high concentration, we need to understand the fundamental principles of diffusion and transport mechanisms in biology. ### Step-by-Step Solution: 1. **Understanding Diffusion**: - Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration. This process occurs until there is an equal concentration of molecules in both areas. **Hint**: Remember that diffusion is driven by concentration gradients. 2. **Passive vs. Active Transport**: - Diffusion is classified as a passive transport mechanism. This means it does not require energy (ATP) to occur. Molecules move spontaneously down their concentration gradient. **Hint**: Distinguish between passive transport (no energy required) and active transport (energy required). 3. **Direction of Movement**: - The question specifies diffusion from low concentration to high concentration. However, this is contrary to the definition of diffusion, which always moves from high to low concentration. **Hint**: Concentration gradients dictate the direction of diffusion. 4. **Evaluating the Options**: - **Option 1**: "Can take place" - Incorrect, as diffusion does not occur from low to high concentration. - **Option 2**: "Can't take place" - Correct, since diffusion cannot occur in this direction. - **Option 3**: "Can take place in the presence of protein" - Incorrect, as this suggests an active transport mechanism, which requires energy. - **Option 4**: "It is irrelevant" - Incorrect, as the question is relevant to the principles of diffusion. **Hint**: Analyze each option based on the principles of diffusion and transport. 5. **Conclusion**: - The correct answer is **Option 2: "Can't take place"** because diffusion cannot occur from low concentration to high concentration. ### Final Answer: The diffusion of a molecule from low concentration to high concentration **can't take place**.
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