Cells of the responding tissue must have both, 

A receptor protein for the inducing factor 

The ability to respond to the signal

TLS Online TPP Program

#Id: 5447

#Unit 7. System Physiology – Animal

All-or-none action potentials

the minimal intensity of stimulating current (threshold intensity) that, acting for a given duration, will just produce an action potential. The thresholdintensity varies with the duration; with weak stimuli it is long, and with strong stimuli it is short

TLS Online TPP Program

#Id: 5095

#Unit 6. System Physiology – Plant

During the day, COP1 exits the nucleus, allowing the transcriptional activators to accumulate.

TLS Online TPP Program

#Id: 9640

#Unit 4. Cell Communication and Cell Signaling

The SH3 domains in GRB2 selectively bind to 

proline-rich sequences in Sos

TLS Online TPP Program

#Id: 3153

#Unit 7. System Physiology – Animal

Vital lung capacity the maximum amount of air expired from the fully inflated lung, or maximum inspiratory level (about 4600 mL)

TLS Online TPP Program

#Id: 6918

#Unit 8. Inheritance Biology

Chromosome deletion