JAK kinases become activated after ligand binding and

receptor dimerization

TLS Online TPP Program

#Id: 10339

#XL - Q Biochemistry

TLS Online TPP Program

#Id: 10028

#XL - T Zoology

In certain immune cells, NF-κB stimulates expression of iNOS (inducible isoform of the enzyme that produces NO), which is toxic to bacterial cells

TLS Online TPP Program

#Id: 9985

#XL - T Zoology

Antagonists of Wnt:

Secreted frizzled-related protein (Sfrp)

Wnt inhibitory factor (Wif)

Dickkopf (Dkk) family

TLS Online TPP Program

#Id: 7762

#XL - Q Biochemistry

In a covalent bond, electrons are shared between atoms. In an ionic bond, electrons are transferred between atoms.

TLS Online TPP Program

#Id: 8132

#XL - T Zoology

Lipids as pigments in plants and bird feathers.

Birds acquire the pigments that color their feathers red or yellow by eating plant materials that contain carotenoid pigments, such as canthaxanthin and zeaxanthin.

The differences in pigmentation between male and female birds are the result of differences in intestinal uptake and processing of carotenoids.