Bioprocessing with Immobilised Cells (Leaving Cert Biology): Quizzes
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Practise the questions
12 questions from this quiz
What are immobilised cells used for in bioprocessing?
What are immobilised cells used for in bioprocessing?
Enzyme-controlled reactions
What is an immobilised enzyme?
What is an immobilised enzyme?
An enzyme attached to an inert material
What substance are cells mixed with during immobilisation?
What substance are cells mixed with during immobilisation?
Sodium alginate
What is the yeast/alginate mixture soaked in?
What is the yeast/alginate mixture soaked in?
Calcium chloride
What does calcium chloride cause the alginate to do?
What does calcium chloride cause the alginate to do?
Form beads around cells
What can pass through the pores in the beads?
What can pass through the pores in the beads?
Substrates and products
Why can't yeast cells escape from the beads?
Why can't yeast cells escape from the beads?
The pores are too small
Which of these is produced using immobilised cells?
Which of these is produced using immobilised cells?
Biogas
What is immobilised E. coli used for?
What is immobilised E. coli used for?
Detoxifying sewage in water treatment
How does immobilisation affect cell stability?
How does immobilisation affect cell stability?
Cells remain very stable
Why are immobilised cells cost-effective?
Why are immobilised cells cost-effective?
They can be reused many times
Why use immobilised cells instead of immobilised enzymes?
Why use immobilised cells instead of immobilised enzymes?
Enzymes are more difficult to prepare