At the same time that Cdc25C is being activated, mitotic CDKs and Plk1 phosphorylate Wee1, which targets it for destruction through a phosphobinding SCF protein-ubiquitin ligase. This forms positive feedback loop 2

TLS Online TPP Program

#Id: 1318

#XL - T Zoology

Rod cells sense light via light-sensitive GPCR known as Rhodopsin.

TLS Online TPP Program

#Id: 8625

#XL - T Zoology

Human SCF complexes contain: 

Three core components - Cul1 subunit, RBX1, Skp1 

and a substrate-targeting F-box protein

TLS Online TPP Program

#Id: 8085

#XL - Q Biochemistry

TLS Online TPP Program

#Id: 8608

#XL - T Zoology

There are three D cyclins in mammals:

cyclins D1, D2, and D3

TLS Online TPP Program

#Id: 9824

#XL - R Botany

Plants that increase stem extension in response to shading are said to exhibit a shade avoidance response.

As shading increases, the R:FR ratio decreases. Shade means far red light