Reprogramming Microbes

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Author:
crobertsonx
ID:
78324
Filename:
Reprogramming Microbes
Updated:
2011-04-08 15:02:21
Tags:
Reprogramming Microbes Biology Biotechnology crobertsonx
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Description:
Biology, Biotechnology, Subtopic
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  1. The cells of living things contain _________. These contain ____ which control the cells activities.
    • chromosomes.
    • genes.
  2. ________ cells also contain chromosomal material, which control the ________ cells’ activities.
    • Bacterial
    • bacterial
  3. Pieces of chromosome can be transferred from an organism to a bacterium, which is then able to produce substances it would not normally be able to make. This is called _______ __________.
    genetic engineering
  4. The sequence in the process of genetic engineering of human insulin by bacteria is:
    -The _____ ____ is identified
    -The ________ is removed from the bacterial cell and opened up
    -The ________ ____ is removed from the human cell and inserted into the plasmid. The genetically altered plasmid is placed inside a new ________ ____
    -The plasmid replicates inside the bacterial cell and _______ is produced
    • human gene
    • plasmid
    • insulin gene
    • bacterial cell
    • insulin
  5. Genetic Engineering shows how bacteria can be made to produce a new substance (_______) which they would not normally be able to make. However when the human ______ ____ is transferred to the bacteria they are able to make insulin.
    • insulin
    • insulin gene
  6. Insulin is a substance certain human cells can make which helps to control blood sugar levels. Some individuals cannot produce insulin and suffer from a condition called _______. These diabetics must have daily injections of insulin to survive
    diabetes
  7. Using genetically engineered bacteria to produce insulin allows _____ ________ of human insulin to be produced quickly. This is important because the number of diabetics is _________ and diabetics are living longer than before, therefore there is an increasing demand for insulin
    • large quantities
    • increasing
  8. Other substances that can be obtained by genetic engineering include ______ _______ and the ______ ______.
    • growth hormone
    • enzyme rennin
  9. _______ ____ is often used to improve certain desired characteristics in animals of plants. It involves carefully selecting those animals or plants that best show the characteristic the breeder wishes to improve and then allowing only those animals or plants to breed.
    Selective breeding
  10. Selective breeding can take many years and many generations of breeding the plants or animals to improve the ______ _________. Also not every individual will possess the improved characteristic.
    desired characteristic
  11. In genetic engineering humans can alter the genetic makeup of a species by ______ _____ which control the particular desired characteristic to animal or plant embryos. When these animals or plants embryos mature they possess the desired characteristic and can ____ __ __ to their offspring.
    • adding genes
    • pass it on
  12. Genetic engineering can alter a species in ___ _________ compared to the many generations required for selective breeding.
    one generation
  13. _________ _________ contain enzymes produced by bacteria. Non-biological enzymes do not contain these enzymes
    Biological detergents
  14. The enzymes in biological detergents enable them to remove stains at ____ _________ than non-biological detergents.
    lower temperatures
  15. The advantages of being able to use biological detergents at lower temperatures:
    -____ ______ is used because less energy is needed to heat the water to the lower temperatures;
    -______ to delicate fabrics is prevented by washing them at a lower temperature
    • less energy
    • damage
  16. Some stains on clothes are caused by _______ present in milk, blood or grass. The enzymes in biological detergents remove these stains by digesting the proteins into _______ substances that can be easily washed away.
    • proteins
    • soluble
  17. __________ are substances which prevent the growth of micro-organisms like bacteria.
    Antibiotics
  18. ____________ is a technique in which enzymes can be fixed onto the surface of jelly beads. This technique makes it much easier for enzyme to be _______ from the end-products.
    • Immobilisation
    • separated
  19. A range of antibiotics is needed in the treatment of bacterial diseases because:
    -no one antibiotic kills ___ _____ of bacteria;
    - if a patient is _______ to one antibiotic then another can be used;
    -bacteria can become ________ to an antibiotic
    • all types
    • allergic
    • resistant
  20. __________ ____ __________ using immobilised enzymes works once the enzymes have been immobilised by attaching them to the surface of glass beads. The immobilised enzymes are placed into the fermenter. Fresh nutrients are then continuously fed into the fermenter while at the same time an equal quantity of ________ is removed.
    • Continuous flow processing
    • product
  21. Continuous flow processing using immobilised enzymes has many advantages over _____ ___________.
    batch processing
  22. _____ ________ involves adding the free enzyme and substrates, allowing the reaction to take place and then having to separate the enzyme from the product.
    Batch processing
  23. Continuous flow processing is more efficient and cost-effective because the product does not need to be ________ from the enzyme and the enzyme can be _____. No time is lost unlike in batch processing where all the equipment must be cleaned and sterilised before the next batch can be set up. The enzyme is not discarded in continuous flow processing, therefore there is no problem with waste disposal.
    • separated
    • reused

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