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'Coronary' refers to heart, and coronary arteries supply heart muscle cells with blood. Firstly consider why we need to transport blood around the body? Blood carries many essential nutrients and componen...

DNA sequencing technology has made great advancements in the recent years and allowed us to sequence bits of DNA. In other words, we now have the technology to determine the sequence of lengths of DNA at ...

The case of the emergence of a new shade within the species is an example of Evolution by Natural Selection. Moths use the colour of their wings as camouflage against pre...

During prophase chromatin condenses and supercoils, and so the chromosomes become visible. The nuclear envelope breaks down and the centrioles migrate to opposite poles of the cell and start to produce th...

An impermeable membrane is one through which no substance can pass. Semipermeable membranes are those which only let solvents, such as water, pass through them. Permeable membranes are those which let sol...