Chemical reactions (e.g., building proteins from amino acids)
Cellular Respiration
Definition: Process supplying energy, commonly referred to as "respiration."
Type: Exothermic reaction (releases energy)
Occurrence: Takes place continually in all living cells
Types of Respiration
Aerobic Respiration
Process: Glucose + Oxygen → Carbon Dioxide + Water + Energy
Equation: C₆H₁₂O₆ + O₂ → CO₂ + H₂O
Key Fact: Releases a large amount of energy as glucose is fully oxidized.
Chemical Symbols:
Glucose: C₆H₁₂O₆
Oxygen: O₂
Carbon Dioxide: CO₂
Water: H₂O
Anaerobic Respiration
Conditions: Occurs when oxygen is limited.
In Muscles:
Process: Glucose → Lactic Acid
Key Fact: Releases much less energy due to incomplete oxidation of glucose.
In Plants and Yeast:
Process: Glucose → Ethanol + Carbon Dioxide
Applications:
Yeast fermentation used for making alcoholic drinks (ethanol) and bread (carbon dioxide creates bubbles for rising dough).
Summary
Aerobic Respiration: Requires oxygen, fully oxidizes glucose, releases more energy.
Anaerobic Respiration: Does not require oxygen, incomplete oxidation, releases less energy.
Further Study
Oxidation: Learn more from related chemistry videos.
Exercises: Next video will cover conditions affecting oxygen availability in muscle cells.
Resources: Vision workbook with questions on respiration available online.
Use this guide to understand the core differences and processes involved in aerobic and anaerobic respiration. This will help with exams and practical applications in biology.