The Delhi Express runs @ 144 kilometers per hours and it reaches destination 20 minute ahead of schedule. If it averages 100 km/hour, it reaches 24 minute behind schedule. What is the average speed it should maintain in order to reach the destination on schedule?

TLS Online TPP Program

#Question id: 1637

#Unit 4. Cell Communication and Cell Signaling

Protective antibodies against infectious agents are often:

TLS Online TPP Program

#Question id: 1638

#Unit 4. Cell Communication and Cell Signaling

Intracellular parasites within macrophages are killed more readily in the presence of:

TLS Online TPP Program

#Question id: 1639

#Unit 4. Cell Communication and Cell Signaling

T-cell surface receptors for antigen partly recognize:

TLS Online TPP Program

#Question id: 1640

#Unit 4. Cell Communication and Cell Signaling

An immune response against grass pollen often involves:

TLS Online TPP Program

#Question id: 1641

#Unit 4. Cell Communication and Cell Signaling

Why are secondary antibody responses better?

TLS Online TPP Program

#Question id: 1642

#Unit 4. Cell Communication and Cell Signaling

Which cell type produces antibodies?