Micro biology

Cell Biology



Summary Notes 2

Name ______________
Class _____________
These notes contain a summary of key facts. When revising, you will still need to refer to your jotter to
remind yourself of the experimental and practical work you have done.




LHS- Cell Biology Unit Summary Notes

, Cells and Cell Structure


 Cells are the building blocks of life.
 All living organisms are made up of cells.
 Cells need to be viewed through a microscope.


Plant cells and Animal cells




Fungal cell e.g. yeast




LHS- Cell Biology Unit Summary Notes

, Bacterial Cell
Bacteria cells do not contain any organelles




plasmid




Cell structure Function

Contains genetic information (DNA) in animal, plant and
Nucleus
fungal cells

Plasmid A small ring of DNA only found in bacterial cells

Controls entry and exit of substances such as oxygen and
Cell membrane
carbon dioxide.

Liquid inside cells containing organelles, the site of various
Cytoplasm
chemical reactions

The outer layer of plant, fungal and bacterial cells which
Cell Wall
helps support the cell

Membrane bound sac that stores a solution of water found in
Vacuole
plant and fungal cells

Main site of energy (ATP) production in aerobic respiration in
Mitochondrion
animal plant and fungal cells

Chloroplast The site of photosynthesis in plant cells
Ribosome Site of protein synthesis in cells


Cell walls of plant, fungal and bacterial cells are not all the same. They are made of
different chemicals.

LHS- Cell Biology Unit Summary Notes