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Which of the following statements is/are...

Which of the following statements is/are not true
A) One ATP molecule yields 32 kJ of energy
B. Pentose Phosphate pathway was discovered by Dickens
C. When tripalmitin is used as a substrate, the R.Q. is 0.7
D. energy released by one molecule of glucose on complete oxidation corresponds to 1292 kJA

A

a and d

B

a and b

C

c and d

D

a, c and d

Text Solution

AI Generated Solution

The correct Answer is:
To determine which statements are not true, we will analyze each statement one by one: ### Step 1: Analyze Statement A **Statement A:** One ATP molecule yields 32 kJ of energy. - The hydrolysis of ATP to ADP and inorganic phosphate releases approximately -30.5 kJ/mol of energy. - The statement claims it yields 32 kJ, which is incorrect. **Conclusion for A:** This statement is **not true**. ### Step 2: Analyze Statement B **Statement B:** Pentose Phosphate pathway was discovered by Dickens. - The Pentose Phosphate Pathway (PPP) is indeed an important metabolic pathway, but it was discovered by scientists including Warburg and Dickens. - The statement claims it was discovered solely by Dickens, which is misleading. **Conclusion for B:** This statement is **not true**. ### Step 3: Analyze Statement C **Statement C:** When tripalmitin is used as a substrate, the R.Q. is 0.7. - The respiratory quotient (R.Q.) for fatty acids, including tripalmitin, is typically around 0.7. - This statement is correct. **Conclusion for C:** This statement is **true**. ### Step 4: Analyze Statement D **Statement D:** Energy released by one molecule of glucose on complete oxidation corresponds to 1292 kJ. - The complete oxidation of glucose yields approximately 36 to 38 ATP, which translates to about 1164 to 1173 kJ/mol. - The statement claims 1292 kJ, which is incorrect. **Conclusion for D:** This statement is **not true**. ### Final Conclusion The statements that are not true are **A, B, and D**. ### Summary of Incorrect Statements: - A) One ATP molecule yields 32 kJ of energy - **Not true** - B) Pentose Phosphate pathway was discovered by Dickens - **Not true** - C) When tripalmitin is used as a substrate, the R.Q. is 0.7 - **True** - D) Energy released by one molecule of glucose on complete oxidation corresponds to 1292 kJ - **Not true** ### Final Answer: The statements that are not true are A, B, and D. ---
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