Q.1
What term is given to “enzymes physically confined or localized in a certain defined region of space with retention of their catalytic activities, and which can be used repeatedly and continuous?
  • a) Localized enzymes
  • b) Localisation of enzymes
  • c) Immobilized enzymes
  • d) Catalysed enzymes
Q.2
Who reported the first industrial use of immobilized enzymes in 1967?
  • a) Robert Hook
  • b) Chibata and co-workers
  • c) James Watson
  • d) Kary Mullis
Q.3
The most common procedures of irreversible enzyme immobilization are covalent coupling, entrapment or micro-encapsulation and ____________
  • a) Hydrophilic linkage
  • b) Di-sulphide bonding
  • c) Covalent bonding
  • d) Cross-linking
Q.4
What is the method name that is based on the occlusion of an enzyme within a polymeric network that allows the substrate and products to pass through but retains the enzyme?
  • a) The entrapment method
  • b) Covalent coupling
  • c) Microencapsulation
  • d) Hollow fibre
Q.5
In physical adsorption the enzymes are attached to the matrix through hydrogen bonding, van der Waals forces, or hydrophobic interactions; whereas in ionic bonding, the enzymes are bound through?
  • a) Hydrophilic linkage
  • b) Di-sulphide bonding
  • c) Salt linkages
  • d) Cross-linking
Q.6
Which of the physical property of the matrices particularly determine the surface area and binding capacity?
  • a) Swelling behaviour
  • b) Mechanical strength
  • c) Compression behaviour
  • d) Pore parameters
Q.7
Which of the following are natural mineral polymers?
  • a) Cellulose
  • b) Dextran
  • c) Agar
  • d) Silica
Q.8
What is the name of the method used to attach enzymes to stationary solids by weak physical forces?
  • a) Absorption
  • b) Cross linking
  • c) Adsorption
  • d) Capillary action
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