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Define quorum sensing.

Important Questions on Biotechnology and Bioinformatics

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Bacteria are grouped under four categories based on their shape. Study the given figure and identify A. B. C and D?

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In a mixed culture of slow and fast growing bacteria, penicillin will
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Match the type of bacteria listed in column I with their activity given in column II. Choose the correct combination of alphabets of the two columns.
 
Column-I Column- II
 (A) Streptomyces  (1) Food Poisoning
 (B) Rhizobium  (2) Source of antibiotics
 (C) Nitrosomonas  (3) Nitrogen fixation
 (D) Acetobacter  (4) Nitrification
   (5) Vinegar synthesis
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How many bacteria are produced in four hours if a bacterium divides once in half an hour
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Escherichia coli and Chlamydomonas possess 70S type of ribosomes.
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The Gram-negative bacteria detect and respond to chemicals in their surroundings by
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Botulism is due to the contamination of
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Rickettsiae constitute a group under
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Mycoplasma differs from virus in being sensitive to
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The largest population of organisms of any type on Earth is of
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Infoldings of the plasma membrane of gram positive bacteria, gives rise to
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The cell wall is made of peptidoglycan in
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Bacterial leaf blight of rice is causes by a species of –

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The cells of the bacterium Streptococcus remain arranged in the form of
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Bacteria reproduce sexually by
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Discuss the various forms of bacteria.
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Find out the incorrect for red muscle fibres
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Bacterial nucleoid consists of
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A 1ml pipette can contain about
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Glycocalyx of fibres on some bacteria so present is made up of