Are you struggling to keep up with your year 11 biology course? Look no further! Our comprehensive study notes cover all the essential topics and concepts you need to succeed in your exams. Written by experienced biology teachers, our study notes are clear, concise, and easy to understand. With det...
Year 11 biolog
Modules: 1 organizatio
2 organization of livi
3 biological
4 ecosystem d
,Cell theory
1. All living organisms are made up of one or more cell
2. Cells are the basic unit of life
3. All cells come from pre existing cells
,Prokaryote cells
• Bacteria and archaea
• Don’t have membrane bound organelles
• Unicellular
• Has cell wall
• Unorganized circular DNA
• Reproduction: asexual (by itself)
• Not separated by cytoplasm (DNA included)
• Smaller than eukaryote cells
• Has few membranous organelles
, Bacterial and Archaea cells
Bacteria:
• Single celled organisms
• Some cause disease, but most are ecologically important
• May have plasmids; small accessory rings of DNA
• Most bacteria have flagella
• Some have fimbriae; help cells attach to surfaces
• Great metabolic diversity
Archaea:
• Kingdom Euryarchaeotic
• Single celled organisms
• Typically generate there own food
• Most live in extreme enviroment
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