2.2.7 Enzymes FMQuiz Homework Solution
Q. What is a denatured enzyme?
A. Loss of enzyme function or activity
Q. Give two features of a denatured enzyme.
A. Changed structure, loss of function
Q. What is meant by an enzyme?
A. Organic protein catalyst
Q. What term is used for the substance(s) that
result(s) from the action of an enzyme on its
substrate?
A. Product
Q. Suggest a temperature at which human
enzymes work best.
A. 37 °C
Q. What is a vessel containing organisms producing
useful products called?
A. A Bioreactor
Q. What is meant by immobilisation?
A. Enzyme trapped in beads or gel so that it will
react with, but not mix with, its substrate
Q. Name the product produced as a result of the
action of catalase on hydrogen peroxide.
A. Oxygen
Q. What term best describes the shape of an
enzyme?
A. Folded
Q. To which group of molecules to which enzymes
belong?
A. Proteins
Q. Name a substance that is used to immobilise
enzymes.
A. Alginate
Q. In relation to an enzyme, explain the term
optimum activity.
A. Working at maximum rate
Q. What is meant by an enzyme’s optimum pH?
A. pH at which enzyme works best
Q. Name a factor that influences the activity of an
enzyme.
A. Temperature or pH
Q. True or False. Enzymes are not essential for
metabolism.
A. FALSE
Q. What is meant by the specificity of an enzyme?
A. Enzyme acts on only a particular substrate
Q. Give an advantage of using immobilised cells in
industrial fermentation.
A. Can be re-used or Pure product produced
Q. State a use for Buffer solution in the biology
laboratory.
A. To keep pH constant
Q. The loss of enzyme function or activity is known
as …
A. Denaturation
Q. State one way by which an enzyme may be
denatured.
A. High temperature or high or low pH or agitation
or high salinity or alcohol
Q. The substrate for the enzyme amylase is …
A. Starch
Q. Apart from C, H and O, what other element is
always present in the building blocks of enzymes.
A. Nitrogen
Q. The substrate of the enzyme catalase is …
A. Hydrogen peroxide
Q. True or False. Immobilised enzymes can act as
catalysts.
A. TRUE
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