N2 constitutes about 80% of the earth’s atmosphere, but the stability of its triple bond renders it inert and metabolically inaccessible to most organisms.

TLS Online TPP Program

#Id: 7759

#Section 2: General Biology

Some elements exist naturally as molecules. For example, hydrogen and oxygen exist as two-atom molecules.

TLS Online TPP Program

#Id: 7939

#Section 3: Genetics, Cellular and Molecular Biology

The GTPase cycle analogous to the GTP hydrolysis coupled to the initiation of translation on the ribosome.

TLS Online TPP Program

#Id: 10336

#Section 2: General Biology

They are pAPCs

Have surface marker  CD19

Antibodies at surface of b cell – IgM, IgD

Cause humoral immunity or antibodies mediated immunity

TLS Online TPP Program

#Id: 8119

#Section 2: General Biology

The triterpenes are C30 terpenes and include squalene and lanosterol, two of the precursors of cholesterol

TLS Online TPP Program

#Id: 8182

#Section 3: Genetics, Cellular and Molecular Biology

When excess H2O2 accumulates in the cell, catalase converts it to H2O through the reaction.