WorksheetsBiotechnology
Total questions: 15
Worksheet time: 8mins
Which of the following microbes is used in making cheese
Lactobacillus
Lactococcus
Probiotics
Penicillium
Which of the following statements about biotechnology is incorrect?
Biotechnology can be used in producing pharmaceuticals.
Bioremediation involved use of microbes in the controlling pollution.
Biotechnology is the use of whole living organisms in industrial processes.
The term biotechnology was first coined in 1919.
What is the fungi Fusarium venenatum used to produce?
Insulin production
SCP production
Bioremediation
Beer production
Which of these is a disadvantage of using microbes in industrial processes.
Microbes are able to work at ambient temperatures and pressures.
Microbes can be genetically modified easily.
Microbial biomass can have a high proportion of nucleic acids.
There are less ethical considerations when using microbes rather than animals.
Which microbe is usually used to create wine?
Penicillium
Sachharomyces Venenatum
Lactobacillus
Saccharomyces Cerevisiae
Which of the following describes a primary metabolite?
Primary metabolites are produced when the microbe is becoming stressed.
Primary metabolites are commonly collected at the end of the staionary phase or in the decline phase of population growth.
Primary metabolites are produced during normal activities of the microbe cell.
Primary metabolites are collected using batch culture
In which phase of microbial growth does reproduction rate exceed the death rate.
Lag phase
Log phase
Stationary phase
Decline phase
Which part of the fermenter is responsible for ensuring that nutrients and bacteria are continually mixed thoroughly?
A
B
I
D
Which part of the fermenter can also be called the sparger
B
D
E
H
Which method of immobilising enzymes involves the enzyme forming ionic bonds with the support material
Adsorption
Entrapment
Covalent bonding
Membrane separation
Which support material is used in covalently bonding of enzymes?
Sodium Alginate
Cellulose
Clay
Titanium
What type of spreading technique is being shown here?
Seeding
Spreading
Streaking
Swabbing
Agar is normally sterilised in which of the following ways?
Heating in a saucepan to at least 121°C for 15 minutes.
Heating in an autoclave to at least 121°C for 15 minutes.
Heating in the oven to 100°C for 25 minutes.
Heating in an autoclave to at least 100°C for 25 minutes.
Which enzyme is used to make fruit juices smooth?
Lactase
Maltase
Pepsinase
Pectinase
What microbe is genetically modified to produce insulin?
Clostridium spp.
Saccharomyces Cerevisiae
E.Coli
Fusarium Venenatum
