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1. What are bacterial cells like?

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  • They are single celled organisms that are much smaller than animal and plant cells. DConsists of cytoplasm and a membrane surrounded by a cell wall. The genes are not in a distinct nucleus.
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2. Explain the function of the cell membrane.

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  • its a gene
  • Controls the passage of substances into and out of the cell.
  • the cell membrane eat your fat
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  • controls the amount of air
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3. Explain the function of ribosomes

  • Where protein synthesis takes place. All the proteins needed in the cell are made here.
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4. Explain the function of the nucleus in cells

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  • Structures in the cytoplasm where oxygen is used and most of the energy is released during respiration.
  • A liquid gel in which most of the chemical reactions needed for life take place.
  • Controls all the activities in the cell. It contains the genes on the chromosomes.
  • Controls the passage of substances into and out of the cell.

5. Give 5 reasons to be in favour of using embryonic stem cells.

  • ) It may be possible to use embryonic stem cells from the umbillical cords of newborn babies.
  • ) They give one of the best chances of finding treatments for different and often serious conditions.
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  • The embyos used are generally spare ones from infertility treatment and would be destroyed anyway.
  • 3) Embryos are being created from adult cells in use in research - they would never be babies
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  • 5) Emryonic stem cells could be used to grow new tissues and organs for transplants.

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