Study of living organisms and bio parts

Comes from Greek words:

Bio = Life

Logos = Study

2. Cell (Basic Unit of Life)

Cell is the smallest unit of life

Discovered by Robert Hooke

Types:

Prokaryotic (no nucleus) Bacteria

Eukaryotic (with nucleus) Plants & Animals

Cell Parts:

Nucleus Control center

Cytoplasm Jelly-like substance

Cell membrane Protects cell

3. Plant vs Animal Cell

Feature

Plant Cell

Animal Cell

Cell wall

Present

Absent

Chloroplast

Present

Absent

Shape

Fixed

Irregular

4. Photosynthesis

Process by which plants make food

6CO_2 + 6H_2O xrightarrow{sunlight} C_6H_{12}O_6 + 6O_2

Needs:

Sunlight

Chlorophyll

Carbon dioxide

5. Respiration

Process of releasing energy from food

Types:

Aerobic (with oxygen)

Anaerobic (without oxygen)

6. Human Digestive System

Food broken into nutrients

Main organs:

Mouth

Stomach

Small intestine

7. Circulatory System

Transport system of body

Main parts:

Heart

Blood

Blood vessels

8. Nervous System

Controls body activities

Main parts:

Brain

Spinal cord

Nerves

9. DNA & Genetics

DNA = Genetic material

Carries traits from parents

Located in nucleus

10. Ecology

Study of environment & living things

Important terms:

Ecosystem

Food chain

Biodiversity

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