Biology: The a nature and variety of living organisms

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1. What are the characteristics of bacteria?

  • Do not have a nucleus, have a circular chromosome of DNA, can photosynthesise, single cell, feed off other organisms
  • Small, do not have a nucleus, photosynthesise, no circular chromosome DNA
  • Feed off other organisms, have a circular chromosome DNA, nucleus, multicellular
  • Reproduce rapidly, circular chromosome DNA, single celled
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2. What is meant by the term pathogen?

  • A pest that can cause disease
  • An organism that protects you from diseases
  • An organism that causes disease
  • Something that makes you ill

3. What are the features of animals?

  • Do not have cell walls, have a nervous system, usually move around, store carbohydrates in a form of glycogen, do not have chloroplasts, multicellular
  • Multicellular, do not have chloroplasts, do not have cell walls, move around
  • Nervous coordination, have chloroplasts, have cell walls, move around, storecarbohydrates
  • Have cell walls, do not have chloroplasts, move around, store carbohydrate

4. What are the characteristics of protoctists

  • Single celled, have chloroplasts
  • Like animal cells, have a chloroplasts, singles celled and microscopic
  • Like plant cells and animal cells
  • Single celled, microscopic, have chloroplasts, like animal cells, have a nucleus, feed off of other organisms

5. What is sapotropic nutrition?

  • It is the secretion and taking in other enzymes from outside of their body
  • It is the way that fungi feed from the outside of their body
  • They secrete extracellular enzymes into the area outside their body to dissolve their food so they can then absorb the nutrients
  • They secrete enzymes into the outside area of their body and then take the nutrients in again

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