Without the abiotic stressors and without frequent disturbances, plants can grow rapidly for long periods of time, and this creates more competition among plants for soil nutrients and light.

Competitors also tend to grow to larger sizes and exhibit long life spans.

TLS Online TPP Program

#Id: 9103

#XL - T Zoology

Resulting rise in cGMP activates protein kinase G leading to relaxation of the muscle and vasodilation

TLS Online TPP Program

#Id: 9299

#XL - T Zoology

Rod cells sense light with the aid of a light-sensitive GPCR called rhodopsin.

TLS Online TPP Program

#Id: 9300

#XL - T Zoology

Rhodopsin has two components: 

Opsin protein, member of the GPCR A family 

11-cis-retinal light-absorbing pigment

TLS Online TPP Program

#Id: 9301

#XL - T Zoology

TLS Online TPP Program

#Id: 9302

#XL - T Zoology

11-cis-retinal covalently attached to the amino group of lysine residue 296 in the opsin protein

TLS Online TPP Program

#Id: 9303

#XL - T Zoology

The heterotrimeric G protein coupled to rhodopsin, called transducin (Gt)