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So, if we looks at the sarcomere of the muscle (which is from one Z line to another) you'll see a thicker looking strand/filament called myosin and thinner strands called actin. Myosin has bulbous structu...
• SAN send a wave of depolarisation/excitation across the atria causing them to contract• wave cannot pass directly to the ventricle, due to the non-conductive tissue of AV-valves• wave reaches the AVN (i...
Starch is a polymer of the sugar glucose, an important component of respiration and needed to provide plants with energy. Unlike glucose, starch is insoluble allowing it to be stored within the cell witho...
The phagocyte is attracted to a pathogen, the pathogen binds to the phagocyte and then the phagocyte engulfs the pathogen. The pathogen is then contained in a phagosome which has been cleaved off the memb...
Transcription and translation are processes that result in gene expression through the synthesis of proteins based upon the reading of genes by molecular machines. These processes arise from the action of...
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