Microbiology Test 1 - Lecture 1-11 | Take the Quiz

What colour will Gram negative bacteria appear after being subject to the Gram stain?

Bacterial growth in normally expressed as ......... In turbidimetric measurements?

The analysis of what component has led to the classification of life into three domains by Carl Woese?

Which of the following statements about Archaea is false?

Archaea contain a membrane bound nucleus.

Archaea form one of the three domains of life.

Some Archaea are able to grow at temperatures above 95 degrees ( ̊C)

Archaea divide by binary fission

Archaea are often considered the ‘extremophiles'

What are flagella?

A bacterial appendage that is used for the exchange of chromosomal DNA

A bacterial appendage that is mainly used for attachment

A bacterial appendage that is used for the exchange of plasmids between bacteria

A bacterial appendage for nutrient uptake

A bacterial appendage that allows for bacterial movement

Fungi are important to food webs because:

They are photoautotrophs

They serve as key decomposers of living organism

They serve as key decomposers of dead organic matter

They generate antibiotics that kill competing plants and animals

They do not cause disease

Gram positive cells:-

Contain tetraethers in their cell wall

Contain large amounts of teichoic acids

Contain large amounts of lipopolysaccharide

Possess an outer membrane

All of the above

Which of the following asexual and sexual spores are characteristic of the Basidiomycota?

Which of these elements is NOT required during viral infection?

Amino acids provided by the host cell

Ribosomes provided by the host cell

Genomic nucleic acid provided by virus

Ribosomes provided by the virus

Energy such as GTP or ATP provided by the host cell

Which of the following statement is FALSE?

A) Viral capsids are important for packaging the viral genome

B) Viral capsids can interact with host cell receptors

C) Viral capsids are important for the intracellular trafficking of viruses

D) Viral capsids protect the viral genome

E) Each virus adopts a unique structure

Which of the following can be used to vaccinate people against viral disease?

What is currently the main measure effective in containing an Ebola outbreak

In a microbial culture the growth limiting substrate is:-

The last nutrient to become exhausted

The first nutrient to become exhausted

The source of silicon

A product of secondary metabolism

A product of primary metabolism

Which of these statements is TRUE?

During infection of a host cell, new virus particles are assembled from newly-synthesised viral proteins and nucleic acids.

During infection of a host cell, viruses can grow and divide to produce new infectious particle

During infection of a host cell, viruses can multiply to produce new infectious particles

During infection of a host cell, new viral particles are assembled using viral proteins released from the incoming virus

During infection of a host cell, new viral particles are assembled using pre-existing cellular proteins and viral genetic material

The function of superoxide dismutase is to:

Limit bacterial growth during aerobic respiration

Limit bacterial growth during anaerobic respiration

Protect bacterial cells growing under high salt concentrations

Convert oxygen radicals to less toxic forms during aerobic respiration

Convert CO2 to organic carbon compounds

Which of the following statements is FALSE?

Hepatitis C virus targets the liver

Yellow Fever virus targets the liver

Norovirus targets the intestinal tract

Influenza virus targets the respiratory tract

Rabies virus targets the liver

Aerotolerantorganisms:

Are unable to grow when oxygen is present

Are unaffected by oxygen

Grow best at atmospheric oxygen concentrations

Grow best at reduced atmospheric oxygen concentrations

Grow best at enriched oxygen concentrations

Which of the following metabolic or physiologic mechanisms explains the scientific basis behind wine production?

Ethanol is produced by the grapes during the grape growing season

Yeasts are induced by high concentrations of ethanol

Penicilliumgrows very rapidly on high molecular weight sugars

The ratio of malic acid to sucrose needs to reach an optimum value during the grape growing season

Penicilliumgrows very slowly on low molecular weight sugars

A strategy to promote the growth of a filamentous fungus in pelleted morphology is normally used for the production of:

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Microbiology Test 1 - Lecture 1-11

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