CeLLs
by GEE SU FEN ANNA
1. The cell wall, "The Skeleton", is made of a stiff material that gives the cell its shape. It protects the cell from damage and is outside the cell membrane. It's main function is to give the cell its shape.
2. Plant Cell:
2.1. The cytoplasm, "The Swimming Pool", is a jelly like substance which allows water, nutrients, wastes and oxygen to pass through. Many important activities take place there.
2.2. The nucleus, "The Brain", is found in the cytoplasm and is a VERY important part of the cell. It controls everything that happens inside the cell and contains hereditary information such as chromosones (chromosones are made up of DNA which contain genes. The nucleus, "The Brain", is found in the cytoplasm and is a VERY important part of the cell. It controls everything that happens inside the cell and contains hereditary information such as chromosones (chromosones are made up of DNA which contain genes.
2.3. The cell membrane, "The Customs", holds the cytoplasm inside the cell and control the substances that go in and out of the cell.
2.4. Note: Not all plant cell have chloroplasts. Some plants do not have chloroplasts as they do not make food using photosynthesis. The roots of a plant do not have chloroplasts either
2.5. The vacuole, "The Spine", more commonly known as sap, is a liquid that is contained within the cavity found in the centre of most plant cells and keeps the cell firm so that the plant can stand upright.
3. Animal Cell:
3.1. - Animal cells have very small vacuoles
3.2. An animal cell has a nucleus, cytoplasm and cell membrane, it does not have a cell wall or chloroplasts
4. Parts Of A Plant And Animal Cell (only cell wall, cytoplasm,nucleus, cell membrane & vacuole are in the syllabus.)
5. Introduction on cells
5.1. The bodies of all living things are made of cells
5.2. They are the smallest unit of life in a body
5.3. They are invisible to the naked eye
5.4. They carry out life processes (eg. respiration, reproduction, growth)
5.5. Organisms that are made out of 1 cell only are called unicellular organisms while organisms that have more than one cell are called multi-cellular organisms
6. Cell Division
6.1. Cell division is continuous
6.2. Cells increase in number by dividing themselves, this process is known as cell division
6.3. Cells divide so that new cells will replace old cells(that don't live forever) and also to help us repair damaged parts of our body
7. Yeast
7.1. Yeast multiplies by a special cell division called budding
8. Binary Fission/Cell division:
9. A simple diagram to show the process of budding
10. Red Blood Cells
10.1. They carry oxygen and are made in bone marrow.
10.2. Red because of Haemogoblin pigment. Life span of about 4 months
10.3. They do not have a nucleus so that it will make way for more air, oxygen. They can also produce up to 9000 million per hour!
11. Prokaryotic Cells
11.1. Cells with nucleus
12. Eukaryotic Cells
12.1. Cells with no nucleus
13. Unicellular
13.1. Paramecium
13.2. Amoeba
13.3. Yeasts
13.4. Euglena
13.5. Bacteria
14. multi-cellular
14.1. Plants
14.2. Animals
14.3. Fungi
14.4. Humans
15. Different cells, different shapes and sizes.
15.1. Cheek cell
15.2. Red blood cell
15.3. Leaf cell
15.4. Animal Cell
15.5. Root cell
16. CTOS
16.1. Cells
16.2. Tissue
16.2.1. Blood
16.2.2. Muscle
16.3. Organs
16.3.1. Stomach
16.3.2. Lungs
16.4. System
16.4.1. Digestive
16.4.2. Muscular
16.4.3. Resiratory
16.4.4. Reproductive
16.4.5. Circulatory