History of Microbiology - Mock Test 12

Question 111

Salt and sugar preserve foods because they

A) Make them acid B) Produce a hypotonic environment C) Deplete nutrients D) Produce a hypertonic environment

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Question 112

Pick out the vector using in human Genome project

A) Phagemid vector B) Yeast artificial chromosomes C) Cosmid vectors D) Yeast episomal plasmids

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Question 113

The light emitted by luminescent bacteria is mediated by the enzyme

A) Coenzyme Q B) Luciferase C) Lactose dehydrogenase D) Carboxylase reductase

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Question 114

The first antibody to contact invading micro organisms was

A) IgG B) IgM C) IgA D) IgD

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Question 115

Spirulina belongs to

A) Xanthophyceae B) Cyanophyceae C) Rhodophyceae D) Pheophyceae

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Question 116

Who provide the evidence that bacterioph age nucleic acid but not protein enters the host cell during infection

A) Alfred D Hershey & Leonard Tatum in 1951 B) Alfred D Hershey & Zindar Lederberg in 1951 C) Alfred D Hershey & Martha Chase in 1952 D) Alfred D Hershey & Macleod in 1952

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Question 117

On soybean which of the following forms symbiotism

A) Azatobactor paspali B) Rhizobium C) Nostoc D) Bradyrhizobium

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Question 118

The symptome general feeling of illness and discomfort is called

A) Cystitis B) Malaise C) Anaphylactic shock D) Arthritis

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Question 119

Reverse isolation would be appropriate for

A) a patient with tuberculosis B) a patient who has had minor surgery C) a patient with glaucoma D) a patient with leukemia

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Question 120

Who demonstrated that open tubes of broth remained free of bacteria when air was free of dust

A) Abbc Spallanzani B) John Tyndall C) Francisco Redi D) Pasteur

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