A tap X fills a tank in 5 hours. Another tap Y fills the same tank in 3 hours. If X starts filling the empty tank and tap Y joins after 1 hour, then how much time will it take for the tank to be completely filled starting from the time when the tap X started filling it?

TLS Online TPP Program

#Question id: 1729

#Unit 4. Cell Communication and Cell Signaling

When a resting naive T-cell engages its specific MHC–peptide complex displayed on the surface of a fibroblast, it:

TLS Online TPP Program

#Question id: 1730

#Unit 4. Cell Communication and Cell Signaling

What is the T-cell ligand binding B7 on a professional antigen-presenting cell?

TLS Online TPP Program

#Question id: 1731

#Unit 4. Cell Communication and Cell Signaling

Which of the following statements is TRUE of Sos (Son of sevenless)?

TLS Online TPP Program

#Question id: 1732

#Unit 4. Cell Communication and Cell Signaling

Protein tyrosine kinase activity following T-cell stimulation:

TLS Online TPP Program

#Question id: 1733

#Unit 4. Cell Communication and Cell Signaling

The early increase in phospholipase Cγ1 activity following T-cell stimulation:

TLS Online TPP Program

#Question id: 1734

#Unit 4. Cell Communication and Cell Signaling

The nuclear AP-1 site responsible for 90% of IL-2 enhancer activity binds: