Question:
The ratio of ATP generated, number of ATP and NADPH + H\(^+\) needed to produce net gain of one glucose in C\(_4\) plants
The ratio of ATP generated, number of ATP and NADPH + H\(^+\) needed to produce net gain of one glucose in C\(_4\) plants
Show Hint
In C\(_4\) plants, the ATP/NADPH ratio is important for the carbon fixation process. Keep in mind that C\(_4\) plants require more ATP compared to NADPH during glucose synthesis.
Updated On: Mar 25, 2025
- 1:2:1
- 3:2:1
- 4:1:2
- 2:3:3
Hide Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
ATP and NADPH + H+ Utilization in C4 Plants
In C4 plants, the ratio of ATP, NADPH + H+, and ATP used for the production of glucose follows a specific metabolic pathway.
- For every molecule of glucose produced in C4 plants:
- ATP is required for the initial carbon fixation step and later for the regeneration of PEP (phosphoenolpyruvate). This process requires 4 ATP.
- NADPH + H+ is required for the reduction steps in the Calvin cycle to convert 3-phosphoglycerate into G3P (glyceraldehyde-3-phosphate). This process requires 2 NADPH + H+.
- Additional ATP is required for the regeneration of ribulose bisphosphate (RuBP), and this is usually 1 ATP.
Thus, the correct ratio of ATP generated, ATP used, and NADPH + H+ used is 4:1:2.
Therefore, the correct answer is (3) 4:1:2.
Was this answer helpful?
0
0
Top Questions on Enzymology
- Read the following statements carefully:
(A) DNA ligases are enzymes that create a phosphodiester bond between DNA fragments.
(B) A protein containing one or more prosthetic groups is called a conjugated protein.,
(C) A type of enzyme inhibition reversed by increasing the substrate concentration is called competitive inhibition.
(D) Two stereoisomers of a given sugar that differ only in the configuration about carbonyl
carbon atom are called anomers.
Choose the correct answer from the options given below: - The energy derived from noncovalent interactions between enzyme and substrate is called:
- The step in an enzymatic reaction of a pathway that needs greatest amount of activation energy is called:
- Enzymes that play two distinct roles, one catalytic and the other regulatory or structural, are called:
- Enzymes that create a phosphodiester bond between the 3' end of one DNA segment and the 5' end of another are called:
View More Questions
Questions Asked in AP EAMCET exam
- Which physical quantity is measured in barn?
- AP EAMCET - 2024
- Nuclear physics
- If a microscope is placed in air, the minimum separation of two objects seen as distinct is 6 µm. If the same is placed in a medium of refractive index 1.5, the minimum separation of the two objects to see as distinct is:
- AP EAMCET - 2024
- thermal properties of matter
- The elongation of a copper wire of cross-sectional area $3.5 \text{ mm}^2$, in the figure shown, is $$ Y_{\text{copper}} = 10 \times 10^{10} \, \text{Nm}^{-2} \quad \text{and} \quad g = 10 \, \text{m/s}^2 $$
- AP EAMCET - 2024
- Elasticity
- A wheel of angular speed 600 rev/min is made to slow down at a rate of \( 2 \) rad/s\(^2\). The number of revolutions made by the wheel before coming to rest is
- AP EAMCET - 2024
- Periodic and oscillatory motions
- One kilogram of a diatomic gas is at a pressure of \(2 \times 10^4 { N/m}^{-2}\) and the density of the gas is \(4 { kg/m}^{-3}\). The internal energy of this gas:
- AP EAMCET - 2024
- Thermodynamics
View More Questions