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Revision Notes

Cellular Respiration in Plants — Revision Notes

Telangana Open School (TOSS) · Class 12 · Biology

Cellular Respiration in Plants revision notes for Telangana Open School (TOSS) Class 12 Biology: 4 topics in quick points.

43 questions25 flashcards4 concepts

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Key Topics to Revise

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1. Overview of Cellular Respiration

  • Cellular respiration is the process by which cells break down food (like glucose) to release energy.
  • It is a catabolic and exergonic process, meaning it breaks down molecules and releases energy.
  • The energy released is stored in ATP (Adenosine Triphosphate), the energy currency of the cell.
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2. Steps of Aerobic Respiration

  • Aerobic respiration occurs in four main steps: Glycolysis, Pyruvate Oxidation, Krebs Cycle, and Electron Transport System.
  • Glycolysis occurs in the cytoplasm and breaks glucose into two pyruvate molecules.
  • Pyruvate is converted to Acetyl CoA before entering the Krebs cycle in mitochondria.
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3. Anaerobic Respiration and Fermentation

  • Anaerobic respiration occurs in the absence of oxygen and includes glycolysis followed by fermentation.
  • Fermentation regenerates NAD⁺ so glycolysis can continue producing 2 ATP.
  • Two common types: alcoholic fermentation (in yeast) and lactic acid fermentation (in muscles).
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4. Significance and Applications

  • Krebs cycle is amphibolic — involved in both breakdown (catabolism) and synthesis (anabolism).
  • Intermediates like alpha-ketoglutaric acid are used to make amino acids.
  • Fermentation is used in food industry — bread, alcohol, curd, and idli/dosa preparation.

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Full Notes

Key Concepts

Glycolysis is the first stepAfter glycolysisThe NADH and FADH2 producedWhen oxygen is not available

Frequently Asked Questions

What are the important topics in Cellular Respiration in Plants for Telangana Open School (TOSS) Class 12 Biology?
Key topics in Cellular Respiration in Plants include Overview of Cellular Respiration, Steps of Aerobic Respiration, Anaerobic Respiration and Fermentation, Significance and Applications. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How should I revise Cellular Respiration in Plants for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 43 practice questions on Cellular Respiration in Plants. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Cellular Respiration in Plants

All Telangana Open School (TOSS) Class 12 Biology Revision Notes

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