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25 Cards in this Set
- Front
- Back
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Life |
Something that has a metabolism + continuity |
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Organism |
A living thing |
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Biodiversity |
Wide variety of living things on Earth |
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Metabolism |
Sum of chemical reactions in an organism |
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Continuity |
Ability of organisms to exist from one generation to the next |
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Characteristics of Life |
1. Organisation 2. Nutrition 3. Excretion 4. Response 5. Reproduction |
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Organisation |
Way living thing are arranged into cells, tissues, organs, organ systems, individuals + populations to support their metabolism + for reproduction |
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Nutrition |
Way living things obtain + use food to provide energy + carry out other characteristics of life |
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Types of Nutrition |
Autotrophic + Heterotrophic |
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Autotrophic |
Organism makes their own food from raw materials in their environment e.g. Plants make food from water + Carbon Dioxide (photosynthesis) |
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Heterotrophic |
Organisms cannot make their own food + must obtain nutrient by eating plants or other animals e.g. Humans obtain energy through eating plants or animal meat |
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Excretion |
Removal of waste from the body |
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Nitrogenous waste |
Waste containing Nitrogen e.g. Urine |
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Ways of Excretion |
- Animals produce urine (urea, salt + water), removed through kidneys - Animals release carbon dioxide through lungs - Plants remove carbon dioxide through stomata |
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Excretion in Skin |
Urea + salts in sweat |
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Excretion in Lungs |
Carbon dioxide |
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Excretion in Liver |
Chemical waste in bile |
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Excretion in Kidneys |
Urea + other salts |
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Response |
Ability to react to internal changes (inside their body) + external changes (in their environment) for survival |
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Difference in Animal + Plant response |
Animals use their senses Plants respond to light, chemicals + water |
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Reproduction |
Ability of an organism to produce new individual of its own kind |
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Types of Reproduction |
Asexual + Sexual |
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Asexual Reproduction |
- 1 parent - No sex cells (gametes) produced - Offspring identical to parent (clone) e.g. Single-celled organisms (bacteria) |
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Sexual Reproduction |
- 2 parents - Male + female sex cells produced - Offspring similar but not identical to parent e.g. Humans + flowering plants |
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Reducing sugar |
A sugar that can be broken down by Benedict's solution |
