| Question | Answer |
| Draw and label a plant and animal Eukaryotes cell | mitochondria,cytoplasm,ribosome,cell membrane,nucleus,cell wall,vacuole,chloroplast
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Describe the job of the ribosome, mitochondria and nucleus | protein synthesis, aerobic respiration, contains DNA and controls the cell
| Explain what a prokaryote cell is and give an example | unicellular e.g. Bacteria,no nucleus free DNA, pili, flagellum
| Calculate the actual size of the object if the image size is 2mm and x450 magnification is used | 4.4micrometers or 0.004mm
| Compare the advantages and disadvantages of light and electron microscopes | light=cheap,better than human eye,electron=better magnification, resolving power, expensive
| Convert 3,500,000 to standard form | 3.5x106
| Convert 2m to micrometers | 2000000micrometers
| Describe protein synthesis | ribosomes,mRNA,tRNA,transcription and translation
| Describe the structure of DNA | double helix, complimentary base pairs, phosphate sugar back bone
| Evaluate who made the biggest contribution to the discovery of the structure of DNA | either scientists as long as their is evidence to base your answer on
| Describe how an enzyme works and give 3 detailed examples | specific substrate, active site, chemical reaction produces product, biological catalyst that speeds up reactions, amylase, protease,lipase, DNA polymerase
| Analyse the graph of enzyme activity and explain the results | 20degrees optimum temperature
| Describe respiration using a word equation | expthermic and makes energy using oxygen + glucose -> carbon dioxide and water
| Compare and contrast anaerobic and aerobic respiration | anaerobic =no oxygen produces lactic acid or alcohol, produces less energy
| Balance the chemical symbol equation for respiration | 6o2 + c6h12o6 -> 6co2 + 6h2o
| Describe the 4 food tests and what a positive result looks like | iodine = black if starch present, benedicts = red if sugar present, Biuret =lilac if protein present, Alcohol = cloudy if fats present
| Describe photosynthesis using a word equation | how plants make food, carbon dioxide + water -> oxygen +glucose
| Explain what factors affect photosynthesis | light intensity, humidity, temperature,co2 conc and water
| Analyse what factors affect respiration giving examples | glucose intake and oxygen intake, e.g. RUnners and overweight people |
