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# 7A Cells, Tissues, Organs and Systems ## 1. Life Processes | Life Processes | Description | |---|---| | **Organism** | A living thing. | | **Movement** | Being able to move from place to place or move part of themselves. | | **Reproduction** | Being able to make more living things like themselve...

# 7A Cells, Tissues, Organs and Systems ## 1. Life Processes | Life Processes | Description | |---|---| | **Organism** | A living thing. | | **Movement** | Being able to move from place to place or move part of themselves. | | **Reproduction** | Being able to make more living things like themselves. | | **Sensitivity** | Being able to sense and react to things around them. | | **Growth** | Being able to increase in size. | | **Respiration** | Being able to release energy through respiration. | | **Excretion** | Being able to get rid of waste materials. | | **Nutrition** | Taking in substances (such as food) to help carry out the other processes. | ## 2. Organs | Organ | Function | |---|---| | **Heart** | Pumps blood around the body. Made up of muscle tissue. | | **Liver** | Makes and destroys substances. | | **Kidneys** | Clean the blood and produce urine to excrete waste. | | **Bladder** | Stores urine. | | **Stomach** | Breaks up food. | | **Small Intestine** | Breaks up food and absorbs it. | | **Large Intestine** | Removes water from unwanted food. | | **Rectum** | Stores faeces (waste material). | | **Brain** | Controls the body. | | **Skin** | The bodies biggest organ- used for protection and sensing things. | | **Lungs** | Take in oxygen for respiration and excrete carbon dioxide. | | **Mouth** | | | **Windpipe (Trachea)** | | | **Throat (Oesophagus)** | | | **Right Lung** | | | **Diaphragm** | | | **Liver** | | | **Kidney** | | | **Leaf** | Traps sunlight to make food for a plant. | | **Stem** | Carries substances around a plant. | | **Root** | Holds the plant in place and takes in water and other substances. | ## 3. Tissues | Tissues | Description | |---|---| | **Tissues** | Groups of the same cells doing the same job - make up organs. | ## 4. Cells | Cell | Function | |---|---| | **Cells** | The basic units from which all tissues and living things are made from. | | **Specialised cells** | When something has features that allow it to do a particular job. | | **Cell Surface Membrane** | Controls what enters and leaves the cell. | | **Nucleus** | Controls the cell. | | **Cytoplasm** | Jelly like substance where chemical reactions happen | | **Mitochondria** | (mitochondrion - singular) Where respiration happens. | | **Chloroplasts** | Make food by photosynthesis - using chlorophyll. Strengthens and supports. | | **Cell Wall** | Strengthens and supports the cell- made of cellulose. Storage space filled with cell sap. | | **Vacuole** | Storage space filled with cell sap. | ## 5. Organ Systems | Organ Systems | Description | |---|---| | **Circulatory System** | Carries oxygen and nutrients around the body. | | **Digestive System** | Gullet, stomach, intestines. Breaks down food and takes nutrients into the blood. | | **Locomotor System** | Muscles, bones - enables the body to move. | | **Urinary System** | Kidneys, bladder - gets rid of waste materials produced in the body. | | **Breathing System** | Lungs, trachea - allows exchange of gases between blood and lungs. | | **Nervous System** | Brain, nerves, spinal cord - allows the body to sense things and react to them. | | **Transport System** | Transports water around the plant. | **Animal Cell Diagram** A diagram of an animal cell is shown including labels such as cytoplasm, nucleus, cell membrane and mitochondrion. **Plant Cell Diagram** A diagram of a plant cell is shown including labels such as cytoplasm, nucleus, cell membrane, cell wall, mitochondrion, permanent vacuole and chloroplast. **Note:** Some of the descriptions are paraphrased to follow the guide of making a complete and precise answer.