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| Question | Answer |
| Cells | Is the fundamental Unit of all life forms |
| Cell Theory | Proposes that all Organisms are composed of one or more cells and the cells are the smallest Unit of life. |
| Unicellular Organisms | Metabolism, Growth, Response, Homeostasis, Nutrition, Reproduction |
| Unicellular Organisms | Are able to control its internal environment The also carry all functions of life |
| Stem Cells | Are unspecialised Can divide repeatedly to make large numbers of new cells |
| Multicellular Organisms | Many cells working in a Unit |
| Multicellular Organisms | Cells > Tissues, >Tissues > Organs,> Organs> Organ System,> Organ System> multicellular Organisms |
| Cell Wall | Protects the cell from the outside environment and maintains the shape of the cell. Also prevents the cell from bursting, if internal pressure rises |
| Plasma Membrane | Semi- Permeable membrane, which controls the substances moving in/ out of cells. It also contains integral and peripheral proteins. Substances pass either through active/ passive pressure transport |
| Pilli | Helps bacteria to adhere each other for an exchange of genetic material |
| Flagella | Made of a protein "flagellin" which helps bacteria move around with the use of a motor protein which spins flagellum like propeller |
| Ribosomes | Are the site of protein synthesis, which contribute in Protein Synthesis by translating messenger RNA |
| Eukaryotic Cells | Animal cells. Example: Liver cell |
| Ribosomes( in Animal Cell) | Found floating free in Cytoplasm or attached to surface of Rough endoplasmic reticulum, mitochondria and Chloroplast |
| Rough Endoplasmic Reticulum (RER) | Modify proteins to alter their function and their destinations. Synthesizes proteins are to be excreted from the cell |
| Lysosome | Contains many digestive enzymes, to hydrolyze macromolecules such as proteins and Lipids into their monomers |
| Golgi Apparatus | Receives proteins from the rough endoplasmic reticulum which may modify them more, packages protein before protein synthesis and sends it to its final destination, which may be intracellular or extracellular |
| Mitochondria | Responsible for aerobic Respiration which converts chemical energy into ATP using Oxygen |
| Nucleus | Contains chromosomes therefore its a hereditary material, which is responsible for controlling cells function |
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