The posterior lobe hormones are nanopeptides with a disulfide ring at one end

TLS Online TPP Program

#Id: 6006

#Unit 3. Fundamental Processes

ATP is required for the binding, but is not hydrolyzed until a later stage. The transcription factor ABF1 binds to the B3 element; this assists initiation by affecting chromatin structure, but it is the events that occur at the A and B1 elements that actually cause initiation

TLS Online TPP Program

#Id: 6009

#Unit 3. Fundamental Processes

TLS Online TPP Program

#Id: 1185

#Unit 7. System Physiology – Animal

The hyperpolarization of rod cells:

  Reduces the release of glutamate

  Generates a signal in the bipolar cells

  Leads to AP in ganglion cells 

TLS Online TPP Program

#Id: 9801

#Unit 6. System Physiology – Plant

Very small amount of far-red light absorbed by Pr makes it impossible to convert Pfr entirely to Pr by broad spectrum far-red light. An equilibrium of 97% Pr and 3% Pfr is achieved. This equilibrium is termed the photostationary state.

TLS Online TPP Program

#Id: 7842

#Unit 1. Molecules and their Interaction Relevant to Biology

Two sugars that differ in configuration at only one chiral center are described as epimers.