The Question is from neet-botany plant-physiology uptake-of-minerals-ion, and it was created by the author D VINOD

Question

Unlike facilitated diffusion, active transport:

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: D
## CONCEPT FRAMEWORK
 **Primary Concept**: Active vs. facilitated diffusion
 **Related Topics**: Cell membrane transport, concentration gradient, ATP
 **Prerequisites**: Understanding of both active and facilitated diffusion.
## SOLUTION PATHWAY
**Given Information**:
The question asks for the key difference between active and facilitated diffusion.
**Method & Steps**:
1. Compare the two transport mechanisms.
  Reasoning: Facilitated diffusion is passive, while active transport requires energy.
  Formula/Rule: None directly applicable, but understanding the characteristics of both mechanisms is crucial.
2. Identify the distinguishing feature.
  Working: Facilitated diffusion uses protein channels but does not require energy and occurs down a concentration gradient. Active transport requires energy to move substances against a concentration gradient.
  Key Point: The energy requirement is the primary difference.
3. Select the correct option.
  Result: Requires energy
  Verification: Active transport needs ATP to function, unlike facilitated diffusion.
 ## OPTION ANALYSIS
A :x: Active transport does require energy.
B :x: Active transport occurs against a concentration gradient.
C :x: Both active and facilitated diffusion may use protein channels.
D ✓: Active transport requires energy (ATP), unlike facilitated diffusion.
 ## LEARNING AIDS
 **Common Mistakes**: Confusing the characteristics of active and facilitated diffusion.
  1. [Error 1]: Thinking that both processes require energy.
  [How to avoid]: Remember that facilitated diffusion is a passive process.
  2. [Error 2]: Not understanding the role of concentration gradients in each process.
  [How to avoid]: Understand that facilitated diffusion occurs down a concentration gradient, while active transport occurs against it.
 **Quick Tips**:  Active transport uses energy, moves against a gradient, and often uses protein pumps. Facilitated diffusion is passive, moving down a gradient, and also often uses protein channels.

D VINOD · Answer

Does not require energy

D VINOD · Answer

Occurs down a concentration gradient

D VINOD · Answer

Uses protein channels

D VINOD · Answer

The correct Option is "Requires energy"

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