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WorksheetsFood Micro Quiz 1
Total questions: 20
Worksheet time: 10mins
Raw and uncooked egg and poultry contain ____
Salmonella enteritidis
Clostridium botulinum
E. coli
Vibrio cholera
Microbes causing spoilage of egg (generally called rot) are ______ in nature
Gram negative
Gram positive
Aerobic
Facultative anaerobes
___________ is present in canned foods that did not undergo sufficient heat treatment
Staphylococcus aureus
E. Coli
Clostridium botulinum
Listeria monocytogenes
Green rot in egg is due to ______
Pseudomonas fluorescens
Serratia marcescens
Proteus spp
Alcalegenes spp
What is the mold that produces aflatoxin?
Rhizopus
Mucor
Aspergillus
Cladosporium
Ropiness in bread is caused by
Molds
Fungi
Bacteria
Algae
Clostridium botulinum is a
psychrophile
mesophile
thermophile
psychrotrophs
What is the most predominant spoilage microorganism in fish?
Cladosporium
Pseudomonas
Serratia
Sarcina
Greening of meat t is due to _____
Bacteria
Yeast
Mold
Algae
Bacterial cells develop resistance to heat during ____________
Lag phase
Log phase
Stationary phase
Death phase
Microbes that are stable at high temperatures are ________
Thermophilic
Xerophilic
Mesophilic
Psychrophilic
Clostridium botulinum and Staphylococcus cause food poisoning by _____
Intoxication
Infection
Contamination
Contagion
Butyric acid in milk is produced by the action of ______
Lactobacillus
Cladosporium
Clostridium
Penicillium
What is the major cause of bacterial soft rot in vegetables?
Pseudomonas
Bacillus
Erwinia
Yersinia
Bacterial cell wall is made up of ______
Cellulose
Dextran
Polysaccharides
Peptidoglycan
Who first studied microbes under a microscope?
Pasteur
Leeuwenhoek
Koch
Appert
These microorganisms can grow at refrigeration temperatures and at above 20 degrees Celsius
Psychrophiles
Mesophiles
Psychrotophs
Thermophiles
Egg albumen contains the protein, _________, that is cidal to Gram-positive bacteria and yeasts
lysozyme
ovotransferrin
avidin
biotin
This mycotoxin is generally found in ground nuts.
Ochratoxin
Botulin
Aflatoxin
Aspratoxin
Most sugar-containing food products which are slightly acid are spoiled by ______
Yeast
Molds
Bacteria
All of the above
