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IGCSE Pearson Edexcel Biology (9-1) summary notes $8.39   Add to cart

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IGCSE Pearson Edexcel Biology (9-1) summary notes

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Ace your IGCSE Pearson Edexcel Biology exams with these summary notes! This complete learning package covers the entire syllabus in an easy-to-understand format, ensuring you're well-equipped to tackle your exams with confidence. What's Included: Detailed Notes: Comprehensive coverage of all ke...

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  • November 12, 2024
  • November 12, 2024
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The Nature and Variety of Living Organisms 🧫🔬

(a) Characteristics of living organisms
M.R.S.G.R.E.N
1. Movement
2. Respiration
3. Sensitive
4. Growth
5. Reproduction
6. Excretion
7. Nutrition



(b) Variety of living organisms
All living organisms can be classified into 5 different kingdoms. Which are
1. Animals
2. Plants
3. Fungi
4. Protoctists
5. Prokaryotes



Eukaryotic cells
1. Contains a nucleus
2. Can be multi or single celled


Animal cells
1. Nucleus
2. Ribosomes
3. Cell membrane
4. Cytoplasm
5. Mitochondria




Plants cells
1. Nucleus
2. Ribosomes
3. Cell membrane
4. Cell wall
5. Chloroplast
6. Cytoplasm
7. Mitochondria
8. A permanent vacuole

, Fungal cells
1. Cytoplasm
2. Nucleus
3. Cell wall (made out of chitin)
4. Mitochondria
5. Ribosomes
6. Cell membrane



Prokaryotic cells
1. No nucleus
2. Singular celled
3. Smaller than eukaryotic cells


Bacteria cells
1. Cell wall
2. Cell membrane
3. Plasmids
4. Cytoplasm
5. Circular chromosomes of DNA



Pathogens
Any microorganism that causes disease in another organism. Such as bacteria, viruses,
protoctists, fungi


Bacteria
M. tuberculosis causes tuberculosis in humans.
N meningitidis causes bacterial meningitis in humans.


Fungi
Athletes foot.
Cattle Ringworm.


Protoctists
Plasmodium falciparum causes malaria in humans.
P. infestans causes potato blight.


Viruses
Not a living organism!
Coronavirus
Influenza virus causes the flu

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