Cysteine
(Science: amino acid) The only amino acid to contain a thiol (SH) group. In intracellular enzymes the unique reactivity of this group is frequently exploited at the catalytic site. In extracellular proteins found only as – cystine in disulphide bridges or fatty acylated.
Molecules move within the cell or from one cell to another through different strategies. Transport may be in the form of..
Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..
There are more species of insects than any other species combined. This surely illustrates that insects have the selecti..
Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy. They are..
This tutorial deals with the structure and function of flowers, fruits, and seeds. Also included here are the types of f..
The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..
