Mougeotia appears to have evolved the ability to exploit red light as a signal to induce a response (chloroplast movement) that is typically mediated by blue light.

TLS Online TPP Program

#Id: 5839

#Unit 10. Ecological Principles

Facilitation may be important in early seral stages and inhibition important in later ones or vice versa.

TLS Online TPP Program

#Id: 1896

#Unit 4. Cell Communication and Cell Signaling

Regulatory T cells inactivate traditional T cells.

TLS Online TPP Program

#Id: 3058

#Unit 10. Ecological Principles

Area is directly proportional to the number of species.

Tropical have highest species due to the area.

TLS Online TPP Program

#Id: 177

#Unit 5. Developmental Biology

In Permissive interaction

The responding tissue has already been specified and needs only an environment that allows the expression of these traits. 

TLS Online TPP Program

#Id: 2910

#Unit 13. Methods in Biology

The rate of sedimentation is dependent upon the applied centrifugal field (cm s-2), G,

that is determined by the radial distance, r, of the particle from the axis of rotation (in cm)

and the square of the angular velocity ω, of the rotor (in radians per second):