Question:

One molecule of $NADH_2$ is equivalent to how many $ATP$ molecules?

Updated On: Mar 29, 2024

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The Correct Option is B

Oxidation of one molecule of $NADH_2$ produces $3 \,ATP$ molecules while a similar oxidation of $FADH_2$ forms $2 \,ATP$ molecules.

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Explanation: The oxidation of one molecule of NADH2 produces 3 ATP molecules while a similar oxidation of FADH2 forms 2 ATP molecules.

Cellular respiration produces both FADH2 and NADH2. Both the Krebs cycle and glycolysis produce these chemicals.
The electron transport system mechanism oxidizes these compounds.
In this system, electrons are donated from a donor to an acceptor and protons from these oxidized products are utilized to create a gradient that aids in the synthesis of ATP.
First, electrons are transferred to complex I by NADH2, and subsequently to complex II. As a result, ATP synthase pumps a greater quantity of protons.
Therefore, three ATPs will be produced for every proton.

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Photosynthesis in higher plants involves the following processes:

This phenomenon occurs in the presence of light.
The pigment absorbs light and produces energy in the form of ATP.
The process involves- absorption of light, water splitting, the release of oxygen, and formation of ATP and NADPH.

This process occurs in the absence of light in the stroma of the chloroplasts. The following cycles are involved in the process:

List-I (Pigments)		List-II (Colour in chromatogram)
1	Chlorophyll 'b'	p	Yellow orange
2	Carotenoids	q	Orange red
3	Chlorophyll 'a'	r	Yellow
4	Xanthophylls	s	Blue green
		t	Yellow green