Biology (Cells)

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  • Created by: kornelija
  • Created on: 26-04-13 23:07

What are Cells?

Cells are what make up all living things.  They are the building blocks of life.  Plant and animal are built up of cells that are stuck together

Tip: It is important that you know the structure of animal and plant cells and are able to label the different parts. It is a favourite with examiners to have diagrams of cells requiring labelling in exams

Typical Animal cell
https://getrevising.co.uk/https_proxy/1005 (http://www.skoool.co.za/studynotes/science/uploadedImages/Coord10.1%20animal%20cell.gif)  

Nucleus- contains all the genetic information to produce new cells and controls all chemical processes that take place in the cell.

Mitochandrion- where respiration takes place, glucose and oxygen are changed into energy.  

Cytoplasm- jelly like substance where chemical reactions take place to keep the cell alive.These reaction are controlled by enzymes.  

Cell Membrane- this is the thin skin around cell.It gives cell its shape and controls what passes in and out of the cell.  

Typical Plant Cell https://getrevising.co.uk/https_proxy/729 (http://www.bbc.co.uk/schools/gcsebitesize/science/images/add_21c_bio_photosynth.jpg)

Chloroplasts- these contain a green pigment called chlorophyll which absorbs sunlight so the plant can carry out photosynthesis.

Cell Membrane- This is the thin skin around the cell.it gives the cell its shape and controls what passes in and out of the cell.

Cytoplasm- Jelly like substance where chemical take place to keep the cell alive. these reactions are controlled by enzymes.

Nucleus- Contains all the genetic information to produce new cells and controls all chemical processes that take place in the cell.

Cell Wall-Covers the thin layer memebrane and is made of tough cellulose which gives the plant strength

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