Summary IGCSE Biology Triple Notes (The Nature and Variety of Living Organisms) EDEXCEL
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Course
IGCSE Biology
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Hi! This revision guide covers the first topic of the Edexcel Triple Science Biology Specification: The Nature and Variety of Living Organisms. It includes the subtopics: MRS H GREN, Microorganisms, Enzymes, Biological Molecules, Food Tests, and Diffusion. Good Luck!
IGCSE Biology Triple Science Notes
The Nature & Variety of Living Organisms
Contents:
MRS H GREN
Microorganisms
Enzymes
Biological Molecules
Food Tests
Diffusion
, MRS H. GREN is the list of rules for something to be considered alive:
Movement
Respiration
Sensitivity
Homeostasis
Growth
Reproduction
Excretion
Nutrition
Virus:
● Unicellular
● RNA or DNA
● Protein Coat
● Always pathogenic
● HIV
● Cold
● Influenza
Bacteria:
● Cell Wall
● No distinct nucleus
○ Nucleoid
● Unicellular
● Sometimes pathogenic
● Tuberculosis
Protoctist:
● Variable
● Can be similar to plants or animals
○ Algae
○ Protozoa
● Can be unicellular or multicellular
● Sometimes pathogenic
● Chorella
● Amoeba
● Plasmodium
Fungi:
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