science EOY exam year 10
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science EOY exam year 10 - Leaderboard
science EOY exam year 10 - Details
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25 questions
🇬🇧 | 🇬🇧 |
What are eukaryotic cells ? | Nucleus to contain chromosomes e.g. animal, plant, fugus or protist |
What are prokaryotic cells? | No nucleus, smaller and contain plasmids |
What are features of a sperm cell? | High number of mitochondria |
Features of a muscle | High number of mitchrondria |
Features of xylem | Walls thickened with lignin to strength the cells into a tube |
Features of phloem | Sections between cells called sieves to help transport substances like dissolved sugars |
Features of root hair cells | Large surface area, large vacuole, lack of cholorplasts |
What happens as an organism develops | Cells differentiate to form different types of cells |
Tell me about light microscopes | Low resolution, low magnification, cheap |
Tell me about electron microscopes | High resolution, high magnification, expensive |
What is diffusion? | Substances move a higher concentration of that substance to where there is a lower concentration of that substance |
Why does diffusion happen? | Random movement of particles in a fluid |
How can the rate of diffusion be changed? | Difference in concentrations, temperature, surface area of the membrane |
What is osmosis? | Diffusion of water from a dilute solution to a concentrated solution through a partially permeable membrane |
Partially permeable | Small molecules can move through but large molecules cannot |
What is active transport | Moving substances against the concentration gradient so requires energy. |
What is photosynthesis? | Endothermic reaction that takes place in chloroplasts in leaves that produces glucose and oxygen from CO2 and water |
State the photosynthesis equation | 6CO2 + 6H20 -> 602 + C6H12O6 |
What do plants do with glucose? | Store as starch, fats and oils, make cellulose |
What factors affect the rate of photosynthesis | Light, temperature, CO2 concentration |