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Food Micro Quiz 1

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Raw and uncooked egg and poultry contain ____

a)

Salmonella enteritidis

b)

Clostridium botulinum

c)

E. coli

d)

Vibrio cholera

2.

Microbes causing spoilage of egg (generally called rot) are ______ in nature

a)

Gram negative

b)

Gram positive

c)

Aerobic

d)

Facultative anaerobes

3.

___________ is present in canned foods that did not undergo sufficient heat treatment

a)

Staphylococcus aureus

b)

E. Coli

c)

Clostridium botulinum

d)

Listeria monocytogenes

4.

Green rot in egg is due to ______

a)

Pseudomonas fluorescens

b)

Serratia marcescens

c)

Proteus spp

d)

Alcalegenes spp

5.

What is the mold that produces aflatoxin?

a)

Rhizopus

b)

Mucor

c)

Aspergillus

d)

Cladosporium

6.

Ropiness in bread is caused by

a)

Molds

b)

Fungi

c)

Bacteria

d)

Algae

7.

Clostridium botulinum is a

a)

psychrophile

b)

mesophile

c)

thermophile

d)

psychrotrophs

8.

What is the most predominant spoilage microorganism in fish?

a)

Cladosporium

b)

Pseudomonas

c)

Serratia

d)

Sarcina

9.

Greening of meat t is due to _____

a)

Bacteria

b)

Yeast

c)

Mold

d)

Algae

10.

Bacterial cells develop resistance to heat during ____________

a)

Lag phase

b)

Log phase

c)

Stationary phase

d)

Death phase

11.

Microbes that are stable at high temperatures are ________

a)

Thermophilic

b)

Xerophilic

c)

Mesophilic

d)

Psychrophilic

12.

Clostridium botulinum and Staphylococcus cause food poisoning by _____

a)

Intoxication

b)

Infection

c)

Contamination

d)

Contagion

13.

Butyric acid in milk is produced by the action of ______

a)

Lactobacillus

b)

Cladosporium

c)

Clostridium

d)

Penicillium

14.

What is the major cause of bacterial soft rot in vegetables?

a)

Pseudomonas

b)

Bacillus

c)

Erwinia

d)

Yersinia

15.

Bacterial cell wall is made up of ______

a)

Cellulose

b)

Dextran

c)

Polysaccharides

d)

Peptidoglycan

16.

Who first studied microbes under a microscope?

a)

Pasteur

b)

Leeuwenhoek

c)

Koch

d)

Appert

17.

These microorganisms can grow at refrigeration temperatures and at above 20 degrees Celsius

a)

Psychrophiles

b)

Mesophiles

c)

Psychrotophs

d)

Thermophiles

18.

Egg albumen contains the protein, _________, that is cidal to Gram-positive bacteria and yeasts

a)

lysozyme

b)

ovotransferrin

c)

avidin

d)

biotin

19.

This mycotoxin is generally found in ground nuts.

a)

Ochratoxin

b)

Botulin

c)

Aflatoxin

d)

Aspratoxin

20.

Most sugar-containing food products which are slightly acid are spoiled by ______

a)

Yeast

b)

Molds

c)

Bacteria

d)

All of the above