In staphylococcal food poisoning and toxic shock syndrome, exotoxins produced by the pathogens function as superantigens, which can activate all T cells. 

TLS Online TPP Program

#Id: 3419

#Unit 3. Fundamental Processes

Ku70 and Ku80 are the most fundamental components of NHEJ. They constitute a heterodimer that binds to the DNA ends and recruits DNA-PKcs, which is a protein kinase

TLS Online TPP Program

#Id: 8477

#Unit 1. Molecules and their Interaction Relevant to Biology

Each single strand of the b-sheet structure can be pictured as a twofold helix, that is, a helix with two residues per turn.

The arrangement of successive amide planes has a pleated appearance due to the tetrahedral nature of the Ca atom.

TLS Online TPP Program

#Id: 560

#Unit 2. Cellular Organization

When polymerase binding causes transition to the open complex and initiates transcription. This gives a low level of constitutive expression called the basal level. 

Binding of RNA polymerase is the rate-limiting step in this case.

TLS Online TPP Program

#Id: 6852

#Unit 3. Fundamental Processes

TLS Online TPP Program

#Id: 7258

#Unit 6. System Physiology – Plant

The rate of CO2 fixation increases with time in the first few minutes after the onset of illumination—a time lag called the induction period