GCSE Biology Quiz 1 cell level systems

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  1. 2. you can measure the rate of photosynthesis by collecting the carbon dioxide given off in photosynthesis in a capillary tube the gas ………… draws the bubble up the tube to the ruler so the bubble can be measured
  2. 3. the substrate connects to the ………site
  3. 5. DNA is large complex molecules made of monomers joined together. This large complex type of molecule is called a ……
  4. 8. light intensity, carbon dioxide concentration and …… affect the rate of photosynthesis
  5. 10. the shape of DNA is a double …..
  6. 12. DNA is made up of two strands the …….on one strand is joined to the …..on the other strand
  7. 15. part of microscope that supports the slide with the specimen in it
  8. 16. a polymer which is made up simple sugars
  9. 17. type of respiration involving oxygen - glucose+oxygen = carbon dioxide+water
  10. 18. are made up of glycerol and fatty acids, but they are not polymers as they don’t make long chains
  11. 21. bacteria dont have a nucleus they have one long circular strand of ……….DNA
  12. 25. The molecule that get changed in a chemical reaction which uses enzymes
  13. 26. the word equation for photosynthesis is carbon dioxide + water -> …………. + oxygen
  14. 27. lens that magnifies the image three different options of magnification
  15. 28. help chemical reactions in cells happen more quickly
Down
  1. 1. when photosynthesis occurs the outside temperature drops this is because photosynthesis is a ……………. Reaction
  2. 4. animal and plant cells. These are complex
  3. 6. plants and bacteria cells can have this, animal don’t have it
  4. 7. The polymers in DNA are made up of monomers called ……..
  5. 9. the rate of enzyme activity is also affected by the ….. level if it is too high or low and the enzyme denatures
  6. 11. If an enzyme gets too hot the shape of the enzymes active site changed and it is said to be ……….
  7. 13. small loops of extra DNA in bacteria cells
  8. 14. the equation for anaerobic respiration in animals if glucose -> …………acid
  9. 19. each enzymes only works with one substrate: it is substrate ………
  10. 20. microscopes that have a higher magnification than light microscopes
  11. 22. a polymer that is made up of amino acids
  12. 23. part of cell in animals and plants that contain a DNA
  13. 24. to describes energy transfer aerobic respiration produces a lot of this (32) anaerobic much less (2)
  14. 29. the equation for anaerobic respiration in plants and fungi is glucose-> ………..+carbon dioxide