Bioprocessing with Immobilised Cells

Question 1 of 8

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Why are enzymes immobilised during bioprocessing?

Select one or more of the following:

  • They are insoluble and easier to reuse and recover

  • To prevent wasting the enzymes

  • To decrease the yield of products

  • They are soluble and harder to reuse

Question 2 of 8

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How are enzymes immobilised?

Select one or more of the following:

  • bonded to each other

  • bonded or attached to an insoluble support

  • fixed to a substrate

  • enclosed in a gel or membrane

Question 3 of 8

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Trapping the enzymes/cells in a gel is the most common technique used for immobilising enzymes

Select one of the following:

  • True
  • False

Question 4 of 8

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In the production of alcohol, what gel are the enzymes/cells fixed to?

Select one of the following:

  • Sodium Chloride

  • Sodium Alginate

  • Potassium Alginate

Question 5 of 8

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What solution are the beads of the sodium alginate-cell/enzyme mixture soaked in during alcohol fermentation?

Select one of the following:

  • Calcium Chloride

  • Sodium Chloride

  • Potassium Chloride

Question 6 of 8

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What role does calcium chloride play in alcohol fermentation?

Select one of the following:

  • It allows sucrose to enter the alginate pores.

  • It causes the alginate to enclose the immobilised yeast cells.

  • It prevents the yeast to pass through the pores.

Question 7 of 8

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Choose the advantages of immobilised cells used in bioprocessing?

Select one or more of the following:

  • It does not damage the cells or affect their ability to carry out the reaction.

  • It is a costly process.

  • The immobilised cells can easily be recovered from the culture medium at the end of the process.

  • Immobilised cells substantially increase the need for filtration.

Question 8 of 8

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Immobilised cells are being increasingly used over immobilised enzymes.

Select one of the following:

  • True
  • False
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Bioprocessing with Immobilised Cells

daniel.praecox
Quiz by , created almost 3 years ago

This quiz examines the content in the notes and flashcard decks on bioprocessing with immobilised cells. It would appeal to anyone studying intermediate level biology.

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jill.examtime
Created by jill.examtime almost 3 years ago
daniel.praecox
Copied by daniel.praecox almost 3 years ago
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