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: 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: 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.

TLS Online TPP Program

#Id: 8286

#XL - Q Biochemistry

TLS Online TPP Program

#Id: 8287

#XL - Q Biochemistry

The relationship between activation energy and the rate constant of the reaction, k, is given by the Arrhenius equation

Arrhenius equation

TLS Online TPP Program

#Id: 8289

#XL - Q Biochemistry

Plot of ln k versus 1/T gives a straight line with a slope (m) of –Ea/R and an intercept (b) of ln A. 

TLS Online TPP Program

#Id: 8290

#XL - Q Biochemistry

van't hoff equation plot

TLS Online TPP Program

#Id: 8292

#XL - Q Biochemistry

TLS Online TPP Program

#Id: 8293

#XL - Q Biochemistry

Graphs of initial velocity against initial reactant concentration for a single-reactant reaction