Which type of infectious dieases has been most successfully controlled by antimicrobial agents?
Bacterial
1 of 12
Which penicillin-producing species of fungus was discovered by Alexander Fleming?
Penicillium notatum
2 of 12
The enzyme catalase detoxifies which of the following molecules?
Hydrogen peroxide
3 of 12
How amny factors affect the growth of microorganisms?
Nutrient availability, water activity, pH, temperature, oxygen
4 of 12
A microorganism which has an optimum temperature for growth of 4oC can be classified as
a psychrophile
5 of 12
Organisms maintain pH at a constant level through the use of
Buffers
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How do Bacteria multiply?
Depending on the species, by either binary fission or hyphal extension
7 of 12
The main feature of a prokaryotic bacterial cell is
The lack of a nucleus
8 of 12
Which phase of microbial growth in batch culture is characterised by the following: a decrease in primary metabolic activity, the production of secondary metabolites and a decrease in cell viability?
Stationary phase
9 of 12
A bacterial culture enters stationary phase because
Toxic products of metabolism may have accumulated, and the energy source may have been depleted
10 of 12
A fungal disease of humans, involving a soreness and itching of tissues between the toes, is known as
Athlete's foot
11 of 12
Which of the following diseases is NOT caused by an Exotoxin?
Meningitis
12 of 12
Other cards in this set
Card 2
Front
Penicillium notatum
Back
Which penicillin-producing species of fungus was discovered by Alexander Fleming?
Card 3
Front
Hydrogen peroxide
Back
Card 4
Front
Nutrient availability, water activity, pH, temperature, oxygen
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