1. Which of the following statcments about innatc immunity are incorrect? a.It i
ID: 132468 • Letter: 1
Question
1. Which of the following statcments about innatc immunity are incorrect? a.It is present at birth b.It is an immediate response to infections. c.It is found only in vertcbrates d.It is a non-specific response to infections. 2 Mucus is part of which defense system? a.adaptive defense b.barricr defense e.cellular defense d.inflammatory response 3 What are toll-like receptors? a.Cells involved in the destruction of large parasites b.Antigen receptors involved in T-cell recognition. c.Cells involved in our inflammatory response. d. Molecular fragments from pathogens that are recognized by our phagocytic cells 4 Which innate defense cell would a pathogen likely encounter in your skin? a.natural killer cell b.cosinophil c.dendritic cell d.B-cell 5 When a cellis infected by a vinus, it can signal other cells to ramp up their defenses by relcasing a. complement proteins b. cosinophils c. interferon protcins d.Toll-like receptors 6 Which cell would NOT be involved in the inflammatory response? a.natural killer cell b.mast cel c.macrophage d.ncutrophil 7 Septic shock a.is fatal in one out of three cases b.is caused by over-production of natural killer cells c.is only caused by large parasites d.results from an out of control adaptive immune system a. that T cells have Y-shaped antigen receptors while B cells have straight antigen receptors b.that T cells are involved in the innate immune system while B cells are involved in the adaptive immune 8 One different between T cells and B cells is stem. c.that T cells attack viruses while B cells attack prokaryotes. d. that T cells mature in the thymus and B cells mature in bone marrow.Explanation / Answer
Answer=
1.The statement about innate immunity are incorrect
c.It is found only in vertebrates.
Explaination- All other statements about innate immunity are correct i.e. It is present from the birth,it is an immediate response to infection,it is a nonspecific response to infection.
But ,It is found only in vertebrates is incorrect because is found in vertebrates as wll as invertebrates.
===================================================================================
2.Mucus is the part of which defense system
b]Barrier defense.
explaination- Physical barriers are the first line of defense against microorganisms.it includes skin and mucus membrane.
Respiratory & gastrointestinal tracts are lined by mucous membrane.they entraps foreign organisms therefore acts as a barrier.
======================================================================================
3.Toll like receptors
d] Molecular fragments from pathogens that are recognized by our phagocytic cells.
explaination- Toll like receptors are essential components of innate immune system.and one of the key factor involving in recognizing and defending against invading pathogens.
These are transmembrane receptors & are a class of pattern recognition molecules that function as signalling receptors.
=======================================================================================
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.