UNIT ONE : Cell Structure and Cells

  • Created by: tagreid
  • Created on: 13-11-18 16:33

What the cells contain

animal cells have ;

nucleus, cytoplasm, cell memabrane, mitochondria and ribosomes 

plant cells have only three more :

chloroplast, cell wall and vacuole

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what the features of the cell do

nucleus : this is where the genetic material is stored in the form of chromosomes 

cytoplasm : the jelly like substance where chemical reactions happen

cell membrane : controls what molecules can enter and leave the cell

mitochondria : produces ATP which gives the cell energy and is also where aerobic respiration happens

ribosomes : synthesise protiens from the DNA 

chloroplast : contains chlorophyll which is green, this absorbs the light and helps attract bees. it is also where photosythesis happens

cell wall : is made from cellulose which helps strenghten the cell

vacoule : filled with a fluid called cell sap. this helps give the cell its shape

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bacterial cells

bacterial cells are singe celled living organisms. They have no nucleus so the DNA is found free in the cytoplasm. They have a slime capsule on the outside of their cell wall and a flagella whihc is a little tail to help them move around. Some bacteria have an extra bit of circular genetic material called a plasmid. A plasmid can carry extra useful information such as resistance to anit-biotics.

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