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Summary- Cytology and Histology Cytology is defined as the studies of electric jail cellular phonephones. Definition of a cell- a cell is basic units of all living things which include humans, animals, plants, and bacteria. vivification distinction are 1. Respiration 2. Ingestion, digestion and utilization of nutrients 3. Response to stimuli 4. excretion of the residues of the digestive process 5. Movement 6. Reproduction prison cell Structure A cell is divided into two briny components: 1. Cell tissue layer 2. Protoplasm The composition of the cell tissue layer is proteins and phospholipids Cell membrane function 1. It keeps the cell separate from another(prenominal) cells 2. It protect the living burden 3. Permits soluble aggregates to raise and feed the cell 4. Capable of active transport of water system, food and group O 5. accord selective micro-nutrients access to the cell interior Methods by which amount of moneys cross cell membrane: 1. Diffusion-this is a process where a fade away shopping mall moves from an area of high concentration of that substance to an area of wretched concentration 2. Osmosis- this is a process where the water molecules move from an area of first-class honours degree substance concentration (little substance, little of water) to an area of high concentration 3.

Facilitated diffusion- this is when somewhat substances, which are lipid soluble, pass into the cell by looseness in the lipid component in the cell membrane 4. bustling transport involves the movement of substances into or out of the cell, by be boun d to a carrier substance, which actively cro! sses the membrane Composition of protoplasm is mainly water in which is dissolved or hang protein, carbohydrates, lipids, nucleic acids, organic and inorganic salts Definition of organelles Organelles: substance are incorporated together to form the working components of the cell Name 1. Lysosomes- contain acids and digestive enzymes, aid to break take large molecules of protein, carbohydrates and nuclei...If you want to get a full essay, tack it on our website: OrderEssay.net

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