The Question is from neet-botany , and it was created by the author B VENKAT

Question

In plants, glycolate metabolism takes place in

B VENKAT · Accepted Answer

## CORE INFORMATION
✓ **Answer**: D
## CONCEPT FRAMEWORK
	**Primary Concept**: Photorespiration and Glycolate Pathway
	**Related Topics**: Photosynthesis, Cellular Respiration, Plant Physiology
	**Prerequisites**: Understanding of plant cell organelles and their functions.
## SOLUTION PATHWAY
**Given Information**:
	The question asks about the location of glycolate metabolism in plants.
**Method & Steps**:
	1. **Understanding Glycolate Metabolism**: Glycolate is produced in chloroplasts during photorespiration. Photorespiration is a process that occurs when RuBisCO (the enzyme responsible for carbon fixation) binds to oxygen instead of carbon dioxide.
	Reasoning:  This is the starting point of the glycolate pathway.
	2. **The Glycolate Pathway**: The glycolate produced in chloroplasts is then transported to peroxisomes, where it is converted to glyoxylate.  Glyoxylate is further processed to produce glycine.
	Working: This step involves several enzymatic reactions.
	Key Point: Peroxisomes play a crucial role in detoxifying the glycolate.
	3. **Further Metabolism**: Glycine is then transported to mitochondria, where two molecules of glycine are converted to serine, releasing carbon dioxide and ammonia. Serine is then transported back to peroxisomes and eventually to chloroplasts to be used in other metabolic pathways.
	Result: The complete pathway for glycolate metabolism involves chloroplasts, peroxisomes, and mitochondria.
	Verification: This pathway is well-established in plant physiology.
## OPTION ANALYSIS
[A] :x: Chloroplasts only - While glycolate is produced in chloroplasts, the pathway doesn't end there.
[B] :x: Peroxisomes only - Peroxisomes are a key part of the pathway, but they are not the sole location.
[C] :x: Mitochondria only - Mitochondria play a role in converting glycine to serine, but the pathway doesn't start or end there.
[D] ✓: Chloroplasts, peroxisomes, and mitochondria - This option correctly identifies all the organelles involved in glycolate metabolism.
## LEARNING AIDS
	**Common Mistakes**:
		1. Thinking photorespiration occurs only in chloroplasts: Remember the other organelles involved.
		2. Confusing the roles of peroxisomes and mitochondria: Clearly understand the specific reactions occurring in each organelle.
	**Quick Tips**:
		1. Remember 'CPM' (Chloroplasts, Peroxisomes, Mitochondria) as a mnemonic.
		2. Visualize the pathway as a cycle involving these three organelles.

B VENKAT · Answer

Chloroplasts only

B VENKAT · Answer

Peroxisomes only

B VENKAT · Answer

Mitochondria only

B VENKAT · Answer

The correct Option is "Chloroplasts, peroxisomes, and mitochondria"

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