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

Question

During aerobic respiration, the complete oxidation of one molecule of glucose theoretically yields 38 ATP. However, the actual yield is often lower. Which of the following is NOT a significant contributor to this reduced ATP yield?

B VENKAT · Accepted Answer

## CORE INFORMATION
✓ **Answer**: [Option A]
## CONCEPT FRAMEWORK
	**Primary Concept**: Energy yield in aerobic respiration
	**Related Topics**: ATP production, oxidative phosphorylation, electron transport chain
	**Prerequisites**: Understanding of cellular respiration and ATP synthesis
## SOLUTION PATHWAY
**Given Information**:
		- Theoretical yield of ATP from one glucose molecule: 38 ATP
		- Actual yield is often lower
**Method & Steps**:
	1. Evaluate the factors that can lower the ATP yield during aerobic respiration.
		Reasoning: Understanding why the actual yield differs from the theoretical yield.
		Formula/Rule: None specifically, but consider the thermodynamics of respiration.
	2. Identify each option's contribution to reduced ATP yield:
		- Incomplete oxidation of glucose leads to less energy release.
		- Leakage of protons reduces the proton motive force, impacting ATP synthesis.
		- Utilization of the proton gradient for other processes (e.g., heat production) decreases ATP generation.
		- Variations in electron transport chain efficiency can affect ATP production.
	3. Determine which option does NOT contribute significantly:
		- Incomplete oxidation, leakage, and utilization of the gradient are all significant factors.
		- Variations in efficiency of the electron transport chain, while impactful, are inherent to the system.
		- Thus, option A (incomplete oxidation in the cytoplasm) is NOT a significant contributor as glucose is fully oxidized in the mitochondria.
		Result: The option that is NOT a significant contributor is option A.
		Verification: Checked against the known mechanisms of ATP production.
## OPTION ANALYSIS
[A] ✓: Incomplete oxidation of glucose in the cytoplasm is NOT a significant contributor as glucose is fully oxidized in the mitochondria.
[B] :x: Leakage of protons across the inner mitochondrial membrane significantly reduces ATP yield by dissipating the proton gradient.
[C] :x: Utilization of the proton gradient for processes other than ATP synthesis reduces the energy available for ATP production.
[D] :x: Variations in the efficiency of the electron transport chain can impact overall ATP yield, but they are less significant than the other factors mentioned.
## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing the roles of different cellular compartments: Ensure clarity on where glucose oxidation occurs.
		2. Overestimating the impact of electron transport chain variations: Remember that they are inherent in the system, rather than external losses.
	**Quick Tips**:
		1. Remember that ATP yield is maximized when glucose is completely oxidized in the mitochondria.
		2. The proton gradient is crucial for ATP synthesis; any loss here directly impacts yield.

B VENKAT · Answer

The correct Option is "Incomplete oxidation of glucose in the cytoplasm"

B VENKAT · Answer

Leakage of protons across the inner mitochondrial membrane

B VENKAT · Answer

Utilization of the proton gradient for processes other than ATP synthesis

B VENKAT · Answer

Variations in the efficiency of the electron transport chain

NEET Botany Respiration in Plants MCQs

Select Topic

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

Question Tags

NEET Subjects

Our Bots

Company