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Gene mutations arise due to errors in DNA replication and include insertion, deletion, substitution, inversion, duplication and translocation of bases. Each triplet of bases encodes one amino acid. Theref...

Proteins are amino acid polymers, joined by peptide bonds which are formed via condensation reactions. The primary structure is the order of amino acids, secondary structure is the folding of polypeptide ...

Red blood cell arrives from the inferior vena cava into right atrium before it passes through the tricuspid valve into right ventricle. It then passes through the pulmonary valve into pulmonary artery bef...

Active site of (enzyme) has a specific active site, complementary to (substrate). Only that (substrate) can bind to this active site to form an enzyme substrate complex.  

The action potential arriving at the presynaptic membrane causes the voltage gated calcium ion channels on the presynaptic membrane to open. This causes an influx of calcium ions into the presynaptic neur...