IGCSE Biology Mind Map

IGCSE-Biology-Mind maps
1. Characteristics and classification of living organisms
- Characteristics of living organisms
- Classification and Diversity of living organisms
Living things are highly organized
All living things have an ability to acquire materials and energy.
All living things have an ability to respond to their environment.
The smallest part of an organism is a cell.
Tissues are organized into organs like the heart.
Most complex of all is the biosphere. 
Example:
young children we learned to avoid hot stoves and busy streets.
Archaea: very ancient prokaryotic microbes
Eubacteria: More advanced prokaryotic microbes.
Eukaryota: All life forms with eukaryotic cells including plants and animals
2. Organisation and maintenance of the organism
- Excretion in humans
- Respiration
- Enzymes
Cellular respiration
Anaerobic respiration
cellular respiration without oxygen
Maintenance respiration
the amount of cellular respiration required for an organism to maintain itself in a constant state
The first stage in clearing the blood is filtration
During reabsorption, needed substances in the filtrate travel back into the bloodstream. Reabsorption occurs in the renal tubules.
Tubular secretion is the passage of certain substances out of the capillaries directly into the renal tubules.
 Oxidoreductases: catalyze oxidation/reduction reactions
 Transferases: transfer a functional group (e.g. a methyl or phosphate group)
Hydrolases: catalyze the hydrolysis of various bonds
Lyases: cleave various bonds by means other than hydrolysis and oxidation
3. Development of the organism and the continuity of life
Reproduction
Growth & Development
Growing Up
Communication
Feeding & Eating
Learning & Play
Medical Care
Movement
Senses
Sleep
Sexual Development
Allogamy
Autogamy
Mitosis & Meiosis
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