Quiz03 Food Microbiology

Which of the following microorganisms is responsible for the fermentation of this product?

• Aspergillus flavus

• Aspergillus niger

• Aspergillus ochraceus

• Aspergillus sojae

Which of the following microorganisms can cause food poisoning?

• Lactobacillus bulgaricus

• Leuconostoc mesenteroides

• Staphylococcus aureus

• Streptococcus thermophilus

Both yeast and mold are fungi. True or false?

• True

• False

The arrows indicate endospores of Bacillus sp. True or false?

• True

• False

(a)   is produced by Streptomyces natalensis and can be used as food additive to prevent mold growth in cheese.

Bacterial cell walls are made up of (a)  

Which of the following microorganisms causes bacterial soft rot?

• Enterobacter faecalis

• Erwinia carotovora

• Pectobacterium carotovorum

• Pseudomonas fluorescens

Which of the following is not the source of microorganisms in food?

• raw material

• food handler

• nutrition label

• production equipment

What is the minimal Aw for growth of Staphylococcus aureus?

• 0.96

• 0.90

• 0.86

• 0.80

In thioglycolate medium, where oxygen gradient exists, which picture describes the growth of microaerophiles?

• A

• B

• C

• D