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Energy for biological processes

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Question 10

An experiment was conducted on mammalian skeletal muscle cells to study the metabolic effects of different respiration inhibitors. Table 1.1 shows the production rate of three key respiratory markers: ATP, carbon dioxide (CO2\text{CO}_2CO2​), and triose phosphate (TP) in cells treated with antimycin A, 2-deoxyglucose (2-DG), or a control phosphate-buffered saline (PBS) solution containing glucose.

Table 1.1

TreatmentATP (10−10 mol s−1)\text{ATP } (10^{-10}\text{ mol s}^{-1})ATP (10−10 mol s−1)CO2 (10−11 mol s−1)\text{CO}_2\text{ } (10^{-11}\text{ mol s}^{-1})CO2​ (10−11 mol s−1)Triose phosphate (TP) (10−11 mol s−1)\text{Triose phosphate (TP) } (10^{-11}\text{ mol s}^{-1})Triose phosphate (TP) (10−11 mol s−1)
Antimycin A1.851.851.850.000.000.004.654.654.65
2-Deoxyglucose (2-DG)0.000.000.000.000.000.000.000.000.00
Control5.805.805.802.902.902.904.404.404.40

Based on the data in Table 1.1, compare the effects of antimycin A and 2-deoxyglucose (2-DG) on respiration in these cells, and deduce which stage of respiration each inhibitor targets.

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Energy for biological processes Questions

  1. A Level
  2. /Biology
  3. /Energy for biological processes