(Science: anatomy) The portion of the colon that connects to the descending colon above and the rectum below.
The sequence of amino acids determines the type of protein. Protein is synthesized according to the sequence of nucleoti..
DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..
The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..
Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..
Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..
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