Metabolism, Cell Respiration, and Photosynthesis
Metabolism involves the totality of chemical reactions within organisms, organized into metabolic pathways, where enzymes play a crucial role in reducing activation energy. Cell respiration transforms biochemical energy into ATP through glycolysis, the link reaction, the Krebs cycle, and the electron transport chain, while photosynthesis converts light energy into chemical energy in two stages: the light-dependent reactions and the Calvin cycle. Anaerobic respiration varies between organisms, with lactate produced in animals and ethanol in yeast.
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What we have learnt
- Metabolism comprises all chemical reactions for life, categorized into anabolic and catabolic pathways.
- Enzymes are catalysts that lower activation energy to enhance the speed of reactions.
- Cell respiration occurs in aerobic and anaerobic conditions, generating ATP through various biochemical processes.
Key Concepts
- -- Metabolism
- The sum of all chemical reactions in living organisms, essential for sustaining life.
- -- ATP
- Adenosine triphosphate, the primary energy carrier in cells, storing energy in its phosphate bonds.
- -- Cell Respiration
- The metabolic processes that convert biochemical energy from nutrients into ATP.
- -- Photosynthesis
- The process through which light energy is converted into chemical energy, producing glucose and oxygen.
- -- Anabolic Pathways
- Metabolic pathways that synthesize complex molecules from simpler ones.
- -- Catabolic Pathways
- Metabolic pathways that break down complex molecules into simpler ones.
Additional Learning Materials
Supplementary resources to enhance your learning experience.