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Cellular Respiration in Plants

Telangana Open School (TOSS) · Class 12 · Biology

Complete topic list for Cellular Respiration in Plants in Telangana Open School (TOSS) Class 12 Biology. Key concepts, sub-topics, and what to focus on for board exams.

43 questions25 flashcards4 concepts

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4 Topics · Telangana Open School (TOSS) Class 12 Biology

Topics in Cellular Respiration in Plants

1

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.

Key Concepts

Central concept: Cellular Respiration

GlycolysisAnaerobic RespirationAerobic RespirationOxidative DecarboxylationKrebs CycleElectron Transport System (ETS)FermentationATP

Frequently Asked Questions

What are the important topics in Cellular Respiration in Plants for Telangana Open School (TOSS) Class 12 Biology?
Cellular Respiration in Plants covers several key topics that are frequently asked in Telangana Open School (TOSS) Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Cellular Respiration in Plants — Telangana Open School (TOSS) Class 12 Biology?
Understand the core concepts first, then work through the 43 practice questions available for this chapter. Revise formulas and 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.

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