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Year 10 Edexcel Biology Exam
- Topic 1: Key concepts
- Cells
- Can Be Prokaryote Or Eukaryote
- Prokaryotes are simple
- Eukaryotes are Complex
- Plant and Animal Cells
- Both Contain
- Nucleus: 'brain of the cell'
- Cytoplasm: where chem reactions occur
- Cell membrane: controls what goes in and out
- Mitochondria: Respiratiion
- Ribosomes: translation
- Nucleus: 'brain of the cell'
- But plant Cells Contain
- Cell Wall: supports cell
- Vacuole: cell sap
- Chloroplasts:photosythesis
- Cell Wall: supports cell
- Both Contain
- Plant and Animal Cells
- Prokaryotes are simple
- Specialised Cells
- Egg cells
- haploid
- haploid
- sperm
- tail for swimming
- haploid
- mitochondria
- tail for swimming
- Ciliated Epithelial cells
- cilia on top
- cilia on top
- Egg cells
- Can Be Prokaryote Or Eukaryote
- Microscopy
- See practical in Revision Guide (CGP) Page 14
- Total magnification= eyepiece lens magnification x objective lens magnification
- Magnification=Image size/real size
- See practical in Revision Guide (CGP) Page 14
- Enzymes
- Are Catalysts
- They Catalyise by either joining up or splitting apart the substarte
- Enzymes have a active site specific to substrate
- They Catalyise by either joining up or splitting apart the substarte
- Tempreture, pH and substrate Conc affect rate of reaction
- Check p.17
- Rate=1000/time
- Rate of Reaction
- Enzymes Break Down Big molecules
- Proteins, Lipids and Carbohydrates are examples
- Protease Coverts Protein to amino Acids
- Lipases covert Lipids to fatty acids
- Protease Coverts Protein to amino Acids
- Amylase Converts Carbohydrates to simple sugars
- Proteins, Lipids and Carbohydrates are examples
- You can test for sugars using Benedicts Reagent
- Starch with iodiene
- Emulsion Test For lipids
- Energy in food (j)= mass of water x Temp x 4.2
- Are Catalysts
- Cells
- Diffusion, Osmosis And Active Transport
- Diffusion
- movement of particles from High conc to low conc
- movement of particles from High conc to low conc
- Osmosis
- movement of water through a partial permeable membrane from high to low conc
- movement of water through a partial permeable membrane from high to low conc
- Active Transport
- movement of particles from area of high conc to low conc against conc graidient using energy
- movement of particles from area of high conc to low conc against conc graidient using energy
- Diffusion
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