P1: Task 1

A. Using simple light microscopy prepare labelled diagrams of a bacterial, plant and animal cell. With each diagram you must identify the characteristic features and functions of the cells key characteristics.
Light Microscopy Diagrams
*attached

Bacterial Cell Diagram
Key Characteristics * Cell wall * Plasma Membrane * Cytoplasm * Ribosome * Plasmid * Flagella * Pilli * Capsule

Characteristic Features and Functions
Cell Wall: * Cell walls of bacteria are made up of glycoprotein. * The main function of cell wall is it helps in providing support, mechanical strength and rigidity to cell and to also protect against osmotic substances. * It also protects the cell from bursting in a hypotonic medium.

Plasma Membrane: * It is also known as cytoplasmic membrane (or) cell membrane. * It is composed of phospholipids, proteins and carbohydrates, forming a fluid-mosaic. * It helps in transportation of substances including removal of wastes from the body. * It helps in providing a mechanical barrier to the cell. * Plasma membrane acts as a semi permeable membrane, which allows only selected material to move inside and outside of the cell.

Cytoplasm: * Helps in cellular growth, metabolism and replication. * Cytoplasm is the store houses of all the chemicals and components that are used to sustain the life of a bacterium. * There is also regulation of substances being transported in and out of the cell with the use of cytoplasms.

Ribosome: * A tiny granule made up of RNA and proteins. * They are the site of protein synthesis therefore take part in such process. * They are freely floating structures that helps in transferring the genetic code.

Plasmid: * Plasmids are small circle of DNA. * Bacterial cells have many plasmids. * Plasmids are