Food Biopreservation Practice Questions (Q1-5) - Dairy Microbiology

1

ICAR JRF Dairy Microbiology 29 Jun 2024Shift 1

MCQ (Single Correct) +4 −1

The maximum levels of permitted preservative sulphur dioxide in fruit juice is .......ppm

50 70 95 120

2

ICAR JRF Dairy Microbiology 29 Jun 2024Shift 1

Match the Following +4 −1

Match List - I with List - II :

Choose the correct answer from the options given below :

List - I		List - II
A	Bacteriocins Bacteriocins	I	Use of bacteriophages to target and kill specific pathogenic bacteria Use of bacteriophages to target and kill specific pathogenic bacteria
B	Phage therapy Phage therapy	I	Use of naturally occurring or selected microorganisms to inhibit pathogens Use of naturally occurring or selected microorganisms to inhibit pathogens
C	Protective cultures Protective cultures	III	Use of antimicrobial proteins produced by bacteria to inhibit other bacteria Use of antimicrobial proteins produced by bacteria to inhibit other bacteria
D	Lactic cultures Lactic cultures	IV	Use of non-pathogenic microorganisms to outcompete and inhibit harmful bacteria Use of non-pathogenic microorganisms to outcompete and inhibit harmful bacteria

(A) - (II), (B) - (I), (C) - (IV), (D) - (I) (A) - (II), (B) - (II), (C) - (IV), (D) - (I) (A) - (I), (B) - (I), (C) - (IV), (D) - (III) (A) - (IV), (B) - (I), (C) - (I), (D) - (III)

3

ICAR JRF Dairy Microbiology 29 Jun 2024Shift 1

MCQ (Single Correct) +4 −1

What distinguishes bacteriocins from conventional antibiotics?

Bacteriocins are exclusively produced by eukaryotic organisms Bacteriocins have a narrower spectrum of activity compared to antibiotics Bacteriocins are not effective against antibiotic-resistant bacteria Bacteriocins typically target bacterial cells of the same species or closely related species

4

ICAR JRF Dairy Microbiology 29 Jun 2024Shift 1

Statement Based +4 −1

Given below are two statements

Statement (I) : Bacteriocins can reduce the risk of foodborne illnesses by inhibiting pathogens such as Listeria monocytogenes.

Statement (II) : Bacteriocins are recognized as Generally Recognized As Safe (GRAS) by some regulatory agencies

In light of the above statements, choose the most appropriate answer from the options given below.

Both Statement (I) and Statement (II) are correct Both Statement (|) and Statement (II) are incorrect Statement (I) is correct but Statement (II) is incorrect. Statement (I) is incorrect but Statement (II) is correct.

5

ICAR JRF Dairy Microbiology 29 Jun 2024Shift 1

MCQ (Single Correct) +4 −1

The tetramic acid derivative produced by probiotic Lactobacillus reuteri is

Reuterin Reutericyclin Reuterimycin Gasserin

Dairy Microbiology विषय एवं अध्याय

General Agriculture

Scope & History of Microbiology

Microbial Genetics

Microbiological Quality of milk

Microbiology of Processed Foods

Starter Cultures & Probiotics

Quality Assurance

Previous Year Papers of Dairy Microbiology

Dairy Microbiology- ICAR JRF/SRF 2024

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