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Choose the incorrect statement regarding...

Choose the incorrect statement regarding glycolysis
(a) The net gain of ATP in this process is 2 ATP molecules
(b) During activation phase of this process, 1 mol of NADH is produced
(c) Second half of this process is referred as Pay-off phase
(d) Each glucose molecule produces 2 molecules of pyruvic acid after partial oxidation

A

The net gain of ATP in this process is 2 ATP molecules

B

During activation phase of this process, 1 mol of NADH is produced

C

Second half of this process is referred as Pay-off phase

D

Each glucose molecule produces 2 molecules of pyruvic acid after partial oxidation

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding glycolysis and identify the incorrect statement, we will analyze each option step by step. ### Step-by-Step Solution: 1. **Understanding Glycolysis**: Glycolysis is the metabolic pathway that converts glucose into pyruvate, producing a small amount of energy in the form of ATP and NADH. It consists of two main phases: the preparatory phase (or activation phase) and the payoff phase. 2. **Analyzing Option (a)**: - **Statement**: "The net gain of ATP in this process is 2 ATP molecules." - **Analysis**: In glycolysis, a total of 4 ATP molecules are produced, but 2 ATP molecules are consumed in the preparatory phase. Therefore, the net gain is indeed 2 ATP molecules. - **Conclusion**: This statement is **correct**. 3. **Analyzing Option (b)**: - **Statement**: "During activation phase of this process, 1 mol of NADH is produced." - **Analysis**: NADH is produced during the payoff phase of glycolysis, not during the activation phase. The activation phase primarily involves the investment of ATP. - **Conclusion**: This statement is **incorrect**. 4. **Analyzing Option (c)**: - **Statement**: "Second half of this process is referred to as Pay-off phase." - **Analysis**: The second half of glycolysis is indeed known as the payoff phase, where ATP and NADH are produced. - **Conclusion**: This statement is **correct**. 5. **Analyzing Option (d)**: - **Statement**: "Each glucose molecule produces 2 molecules of pyruvic acid after partial oxidation." - **Analysis**: Glycolysis converts one molecule of glucose (6 carbons) into two molecules of pyruvate (3 carbons each). - **Conclusion**: This statement is **correct**. ### Final Conclusion: The only incorrect statement regarding glycolysis is **(b)**: "During activation phase of this process, 1 mol of NADH is produced."
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Knowledge Check

  • For a reaction, CaCO_(3(s)) rarr CaO_((s))+CO_(2(g)) Delta_(f)H^(@)(CaO)=-"631.1 kJ mol"^(-1) Delta_(f)H^(@)(CO_(2))=-"393.5 kJ mol"^(-1) and Delta_(f)H^(@)(CaCO_(3))=-"1206.9 kJ mol"^(-1) Which of the following is a correct statement? (A) A large amount of heat is evolved during the decomposition of C a C O 3 . (B)Decomposition of C a C O 3 is an endothermic process and heat is provided for decomposition (C) The amount of heat evolved cannot be calculated from the data provided . (D) Δ f H ∘ = Σ Δ f H ∘ (reactants) − Σ Δ f H ∘ (products)

    A
    A large amount of heat is evolved during the decomposition of `CaCO_(3)`.
    B
    Decomposition of `CaCO_(3)` is an endothermic process and heat is provided for decomposition
    C
    The amount of heat evolved cannot be calculated from the data provided .
    D
    `Delta_(f)H^(@)=SigmaDelta_(f)H^(@)" (reactants)"-Sigma Delta_(f)H^(@)" (products)"`

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