BiologyFundamental ConceptNCTB জীববিজ্ঞান অধ্যায় ৪ (জীবনীশক্তি)

Cellular Respiration

Bengali: কোষীয় শ্বসন•Pronunciation: রেসপিরেশন•Symbol: \text{Respiration}

Standard Definition:

The metabolic pathways that break down glucose and produce ATP through aerobic and anaerobic oxidation.

📐 Mathematical Equation, Units & Dimensions

Defining Mathematical Equation

\text{C}_6\text{H}_{12}\text{O}_6 + 6\text{O}_2 \rightarrow 6\text{CO}_2 + 6\text{H}_2\text{O} + 38\text{ ATP (or 36 ATP)}

Standard SI Unit

Energy release: kcal or kJ(শক্তি নির্গমন: $kcal$ বা $kJ$)

Dimensional Analysis

[M L^2 T^{-2}]

CGS Unit

cal

📖 Physical Concept & Comprehensive Explanation

Aerobic respiration breaks down 1 mole of glucose to yield 38 ATP (classical NCTB) or 36 ATP (modern biochemical consensus), releasing 686 kcal. It comprises Glycolysis, Acetyl-CoA synthesis, the Krebs cycle, and the electron transport chain.

🎯 High-Yield Revision Points

✓Aerobic respiration generates 38 ATP and 686 kcal per mole of glucose.
✓Krebs cycle occurs in mitochondrial matrix, dubbing mitochondria the powerhouse of the cell.
✓Anaerobic pathway yields only 2 net ATP.