Quiz I

The organism which obtain their energy from light are designated as

Protrotrophs

Organotrophs

Phototrophs

Lithotrophs

Microorganisms which grow without oxygen are called

Anaerobic

Aerobic

Aerophilic

Microaerophilic

Bacteria that uses chemical compouns as a source of energy and organic compounds as a source of electrons are called as

Photoorganotrophs

Photolithotrophs

Chemolithotrophs

Chemoorganotrophs

Bacteria that grows in the presence of little amount of Oxygen, and dies when the oxygen level is increased are called as

Aerobes

Anaerobes

Microaerophiles

Facultative anaerobes

Which of the following is not a trace element that is required for bacterial growth?

Mn2+

Mg2+

Cu2+

Ni2+

Photolithotrophs

Use light as energy source and inorganic compounds as carbon source

Uses light as energy source and organic compounds as carbon source

Use light as energy source and inorganic compounds as electron source

Uses light as energy source and organic compounds as electron source

Blood agar is a

Selective medium

Differential medium

Both selective and differential medium

None of the above

EMB agar is a

Selective medium

Differential medium

Both selective and differntial medium

All of the following are true about agar except

It is a polysaccharide derived from a red alga

It is metabolized by many bacteria.

It facilitates obtaining pure cultures

It solidifies at approximately 40°C

A medium is prepared with the following components: Na2HPO4, KH2po4, MgSO4, CaCl2 and NaHCO3. This medium is a

Complex medium

Enriched medium

Minimal medium

Chemically defined medium

He equation used to obtain bacterial population by binary fission is

N = N0 * 2^n

N0 = N * 2^n

N0 = N* n^2

N0 = Ln (N - N0 * 2^ n)

The reproduction by budding occur in

Rhodopsueodomonas acidophila

Bacillus subtilis

Hyphomicrobium vulgare

Streptomyces sp.

During exponential growth, the growth rate is

Reciprocal of generation time

Number of generations per unit time

Both (a) and (b)

None of the above

What are primary and secondary metabolites?

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Quiz I

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