Question

TLR-3 is _______

a. Recognizes double-stranded RNA.
b. Recognizes lipopolysaccharide (LPS).
c. Recognizes flagellin.
d. Recognizes single-stranded RNA.

Answer 1

TLR-3 is recognized for recognizing double-stranded RNA, playing a vital role in the innate immune response to identify RNA viral infections.

Step-by-step explanation:

TLR-3 is recognized for its ability to recognize double-stranded RNA (dsRNA).

Toll-like receptors (TLRs) are proteins located on the cell membranes of immune cells that play a crucial role in the immune system by detecting molecules often associated with pathogens.

TLR-3, in particular, is specialized in identifying dsRNA, a molecule that can be indicative of viral infection, especially from RNA viruses. These immune system receptors are essential for triggering an appropriate innate immune response, allowing the body to respond to infections rapidly.

Answer 2

TLR-3 is a protein that recognizes double-stranded RNA (dsRNA), a molecular pattern often associated with RNA viral pathogens, and is part of the immune system's ability to distinguish between self and non-self entities.D is the correct answer.

Step-by-step explanation:

The student has asked about the specific function of TLR-3 within the immune system. TLR-3 is a protein that plays a crucial role in the body's immune response by recognizing specific molecules indicative of pathogenic presence.

In this context, TLR-3 recognizes double-stranded RNA (dsRNA), which is often a molecular pattern associated with viral pathogens, particularly those of the RNA virus category. Identifying the correct function of TLR-3 is important for understanding how the immune system discriminates between self and non-self as well as how it triggers an appropriate response.

Among the listed options, lipopolysaccharide (LPS) and flagellin are recognized by other Toll-like receptors, not TLR-3, and single-stranded RNA is typically recognized by different sensors within the immune system. .