James Hutton and Charles Lyell- Uniformitarianism

TLS Online TPP Program

#Id: 8616

#XL - R Botany

Phosphorylation of T14 and Y15 in this G-loop

introduces negative charge that electrostatically interferes with the binding of ATP in the catalytic pocket.

TLS Online TPP Program

#Id: 7885

#XL - Q Biochemistry

VDAC 

A multifunctional transmembrane channel protein (similar in structure to bacterial porins) allow passing of  ions and most small hydrophilic molecules (up to about 5000 Da).

TLS Online TPP Program

#Id: 8132

#XL - Q Biochemistry

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.

TLS Online TPP Program

#Id: 8402

#XL - Q Biochemistry

The arrival of a nerve impulse at a neuromuscular junction triggers an action potential in sarcolemma.

TLS Online TPP Program

#Id: 356

#XL - R Botany

The reaction catalyzed by citrate synthase is essentially a Claisen condensation, involving a thioester (acetyl-CoA) and a ketone (oxaloacetate)