PI-3 kinase was first identified in studies of the 

polyoma virus, a DNA virus

#Id: 7747

#XL - Q Biochemistry

Size of atom or atomic radii can be estimated by effective nuclear charge

#Id: 7746

#XL - Q Biochemistry

The noble gases are left out of the trends in atomic radii because there is great debate over the experimental values of their atomic radii.

The SI units for measuring atomic radii are the nanometer (nm) and the picometer (pm). 1 nm = 1 X 109 m; 1 pm = 1 X 10-12 m.

#Id: 7745

#XL - Q Biochemistry

The noble gases are left out of the trends in atomic radii because there is great debate over the experimental values of their atomic radii.

The SI units for measuring atomic radii are the nanometer (nm) and the picometer (pm). 1 nm = 1 X 109 m; 1 pm = 1 X 10-12 m.

#Id: 7744

#XL - Q Biochemistry

An ionic radius is one-half the distance between the nuclei of two ions in an ionic bond.

#Id: 7743

#XL - Q Biochemistry

A covalent radius is one-half the distance between the nuclei of two identical atoms.

#Id: 7742

#XL - Q Biochemistry