science EOY exam year 10
🇬🇧
In Inglés
In Inglés
Practique preguntas conocidas
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Exámenes
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Modos dinámicos
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Modo manual [beta]
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science EOY exam year 10 - Marcador
science EOY exam year 10 - Detalles
Niveles:
Preguntas:
25 preguntas
| 🇬🇧 | 🇬🇧 |
| 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 |