The ability of an organism to resist infections by the pathogens is called___________
A.
Infection
B.
Hypersensitivity
C.
Immunity
D.
Allergy
Answer: Option C
Explanation:
Immunity is the ability of an organism to resist infections with the help of the immune system. Immunity is further divided into two categories, i.e. innate immunity and adaptive immunity.
Which of the following compounds is NOT found in tears?
A.
Lysozyme
B.
Lactoferin
C.
IgA
D.
IgE
Answer: Option D
Explanation:
IgE participates in hypersensitivity reactions, but not present in tears. Tears are the secretion of lacrimal gland and also know as lacrimal fluid consists of lysozyme, lactoferrin, and IgA.
Name the cytokines which released in response to virus infection?
A.
Interferons
B.
Monokines
C.
Lymphokines
D.
Interleukins
Answer: Option A
Explanation:
Monokines, lymphokines, interleukins, and interferons are cytokines which are of low molecular weight soluble protein or glycoprotein. Interferon is cytokines produced by cells in response to virus infections.
Name the group of pattern recognition molecules which functions exclusively as a signaling receptor?
A.
CRP
B.
Toll-like receptor
C.
MBL
D.
LPS
Answer: Option B
Explanation:
Toll-like receptor functions exclusively as a signaling receptor and is a pattern recognition molecule. It was identified as a protein involved in the formation of dorso-ventral polarity in developing fly embryos.
