From that point, downward movement is described as acropetal (toward the apex). Movement of auxin from the apex of the root toward the root–shoot junction is also described as basipetal (toward the base).

TLS Online TPP Program

#Id: 2545

#Unit 13. Methods in Biology

Efficiency of PCR is affected by primer length; it declines if the primers used for PCR arc too long.

TLS Online TPP Program

#Id: 9921

#Unit 4. Cell Communication and Cell Signaling

Cell-Mediated Immunity against Virus

Both CD8+ TC cells and CD4+ TH1 cells are required components of the cell-mediated antiviral defense.

Activated TH1 cells produce IL-2, IFN-ϒ, and tumor necrosis factor-α.

TLS Online TPP Program

#Id: 2432

#Unit 3. Fundamental Processes

When the RNA polymerase reaches the termination site, rho first freezes the structure of the polymerase and then invades the exit channel to destabilize the enzyme, causing it to release the RNA.

TLS Online TPP Program

#Id: 3188

#Unit 3. Fundamental Processes

A single D loop is found as an opening of 500 to 600 bases in mammalian mitochondria.

TLS Online TPP Program

#Id: 5097

#Unit 6. System Physiology – Plant

Plant phytochrome is an autophosphorylating serine/threonine kinase that may phosphorylate other proteins (X).