IMMUNOLOGY

OVERVIEW OF THE IMMUNE SYSTEM

IMMUNITY INNATE AND ADAPTIVE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Chemical defense molecules on tears
A
Lysosome
B
Lysozyme
C
Enzyme
D
Fatty acids
Explanation: 

Detailed explanation-1: -In the eyes, tears contain the chemical mediators lysozyme and lactoferrin, both of which are capable of eliminating microbes that have found their way to the surface of the eyes. Lysozyme cleaves the bond between NAG and NAM in peptidoglycan, a component of the cell wall in bacteria.

Detailed explanation-2: -Lysozyme is part of the first line of defense in the innate immune system and cleaves linkages between N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM) in bacterial peptidoglycan.

Detailed explanation-3: -Lysozyme is present in tears and has the ability to inhibit bacterial growth. In addition, it acts as a physiological scavenger for harmful substances.

Detailed explanation-4: -Lysozyme, also known as muramidase, is an enzyme found in tears that is a component of the innate immune system, providing a first line of defense for the eye. Lysozyme kills gram-positive bacteria, protecting the eye against pathogens.

Detailed explanation-5: -Lysozyme is a  14 kDa protein present in many mucosal secretions (tears, saliva, and mucus) and tissues of animals and plants, and plays an important role in the innate immunity, providing protection against bacteria, viruses, and fungi.

Detailed explanation-6: -Lysozyme is the enzyme that is found in the secretions (tears and saliva) of animals. It is also present in our nasal mucus. Lysozyme acts as a first line of defense as it is capable of breaking the chemical bonds in the outer cell wall of the bacteria that try to enter our body.

Detailed explanation-7: -Lysozyme is the enzyme present in tears which prevents eye infections. It is antimicrobial in nature that forms part of the innate immune system. This enzyme causes the lysis of the cell wall of the bacteria. Lysozyme is abundant in secretions including tears, saliva, human milk, and mucus.

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