Zeff=Z –S

Chlorine would have a Z value of 17 (the atomic number of Chlorine). Continuing to use Chlorine as an example, the 10 inner electrons (S) would screen out the positive charge of ten protons. Therefore there would be and effective nuclear charge of 17-10 or +7.

TLS Online TPP Program

#Id: 8115

#XL - Q Biochemistry

Excreted S1P provokes many different cell and tissue effects, among them inflammation in allergic reactions, cell proliferation, angiogenesis, malignant transformation, and movement and migration of certain cells.

TLS Online TPP Program

#Id: 8634

#XL - R Botany

At the metaphase to anaphase transition, APC/C bound to Cdc20 targets cyclins A /B and securin for degradation.

TLS Online TPP Program

#Id: 10719

#XL - R Botany

Modifications to carry on special mechanical functions

1. Prop Roots- hanging structures that support a banyan tree

2. Stilt roots

Stilt roots of Sugarcane and Maize are supporting roots which arise from the lower nodes of the stem. These roots grow downwards and penetrate the soil and provide mechanical support to the plant.

Ex- Sugarcane  

3.Climbing roots

climbers can climb up their supports as adventitious roots growing from the nodes.

e.g., Pothos (money plant)

TLS Online TPP Program

#Id: 8851

#XL - R Botany

Geminin is expressed in late G1; it binds to and inhibits Cdt1 preventing reloading of the MCM helicase.

TLS Online TPP Program

#Id: 8227

#XL - T Zoology

Population can be defined as a group of interbreeding individuals occupying the same area at the same time.