2b) Cell structure

Animal Cell:

• Nucleus 
• Cell Membrane 
• Cytoplasm 

Plant Cell:

• Nucleus 
• Cell Membrane 
• Cytoplasm 
• Cell wall
• Vacuole
• Chloroplast  

2a) Levels of Organisation

Some organelles (tiny structures within cells) found in a typical  animal cell:

• nucleus 
• cell membrane 
• cytoplasm 

Found in plant cell:

• Chloroplasts 
• Cell wall 
• Vacuole 

And some cells are specialised 

Section 2

Structures and functions in living organisms

1b) Variety of living organisms

Organisms	Description	Examples
Plants	Multicellular Chloroplasts: photosynthesise Cell walls: out of cellulose Store carbohydrates: starch	Trees Cereals Legumes
Animals	Multicellular No cell walls Store carbohydrates as glycogen Fat cells Cells can change shape	Mammals Insects
Fungi	Single-celled Mycelium: hyphae which has leads of nuclei Cell walls made of chitin Starch stored	Mushrooms Puffballs Yeasts Mucor
Bacteria	Single-celled and microscopic No nucleus Circular chromosome of DNA Some can photosynthesise Feed off other organisms	Salmonella Typhi Vibrio
Protoctists	Single-celled and microscopic Chlorophasts and similar to plant cells some animals cells	Chlorella Amoeba
Viruses	Not living No cells Don' t store energy Hide in living cells Can't detect them (antibodies)	HIV AIDS

1a) Characteristics of living organisms

Movement
Respiration - getting energy from food
Sensitivity - detecting changes in surroundings
Growth - grow and develop into adult form
Reproduction - make new generations of a species
Excretion - getting rid of waste products
Nutrition - taking in and using food as a supply of energy

Section 1

The nature and variety of living organisms

Summary

This will cover and explain the specification for Edexcel Triple Science Biology. It can however be also used for Edexcel Double Science Biology. Notes for paper two will be in distinctively labelled. 

Starting Up

I've decided to start this blog on Biology to have a typed up source by me on the internet, to use along side my other revision on paper. Obviously you can't rely on everything that I have written and the notes on this blog are a combination of what my teachers have taught me, what my tutor has said and revision guides and sites such as BBC Bitesize and GetRevising. Before using this blog to aid with your revision make sure that the specification and exam board (e.g. Edexcel) of subjects are the same or similar to mine.