Defensins and cathelicidin LL-37 are secreted constitutively by epithelial cells in many tissues, and are stored as well in neutrophil granules, where they contribute to killing phagocytosed microbes.

TLS Online TPP Program

#Id: 191

#Unit 5. Developmental Biology

At slightly lower concentrations (intermediate concentrations), activin (about 100 molecules per cell) activated the Xbra gene and instructed the cell to become muscle.

TLS Online TPP Program

#Id: 8557

#Unit 1. Molecules and their Interaction Relevant to Biology

In more complicated systems, the primary plots may be linear but the secondary plots non-linear. For example, if not one but two molecules of inhibitor can bind to the substrate binding site, then parabolic competitive inhibition is said to occur, because of the shape of the secondary and Dixon plots.

TLS Online TPP Program

#Id: 8433

#Unit 10. Ecological Principles

Type of iteroparity

Seasonal iteroparity - have distinct breeding seasons 

Continuous iteroparity- reproduce at any time of the year. 

TLS Online TPP Program

#Id: 823

#Unit 4. Cell Communication and Cell Signaling

R genes recognizes effector molecules or the effects of these effectors on host proteins. This form of defense is known as R gene‐mediated defense or effector-triggered immunity

TLS Online TPP Program

#Id: 2451

#Unit 3. Fundamental Processes

Allolactose binds to the Lac repressor and triggers a change in the shape (conformation) of that protein.