Changes in the genetic code in bacterial or eukaryotic nuclear genomes usually assign amino acids to stop codons or change a codon so that it no longer specifies an amino acid.

TLS Online TPP Program

#Id: 1464

#Unit 4. Cell Communication and Cell Signaling

Each classical cadherin molecule contains: 

A single transmembrane domain

A relatively short C-terminal cytosolic domain

Five extracellular “cadherin” domains (called EC1–EC5)

TLS Online TPP Program

#Id: 1216

#Unit 7. System Physiology – Animal

The chief cells of the parathyroid glands synthesize and secrete PTH.

TLS Online TPP Program

#Id: 8513

#Unit 2. Cellular Organization

TLS Online TPP Program

#Id: 5380

#Unit 10. Ecological Principles

1. The dispersion pattern starts out random but ends up uniform.
2. Uniform dispersions may also result from social interactions.
3. Territoriality between animals also causes uniform dispersion patterns.

TLS Online TPP Program

#Id: 9331

#Unit 4. Cell Communication and Cell Signaling

In the dark, most transducin is localized to the outer segment, while most arrestin is found in other parts of the cell; in this condition, vision is most sensitive to very low light levels.