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Microbiology

Microbiology
Which of the following is a gram-positive bacteria?

Streptococci
Staphylococci
All of these
Lactobacillus

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Microbiology
Gram-negative bacterium is/are

Staphylococci
Clostridia
Escherichia
All of these

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Microbiology
Which of the following toxin causing botulism is less toxic to human beings?

None of these
Type C
Type A
Type B

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Microbiology
The milk streptococci produce acetoin that gets spontaneously oxidized yielding a flavorings agent (responsible for aroma of butter) that is

acetone
acetyl coA
diacetyl
butyric acid

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Microbiology
Gram-negative bacteria, responsible for food poisoning, is/are

None of these
Pseudomonas
Salmonella
Clostridia

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Microbiology
The gram-positive bacteria lack __________ structure/component?

teichoic acid
plasma membrane
outer membrane
murein

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MORE MCQ ON Microbiology

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