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Actin and myosin filaments. Myosin heads bind to actin filaments, and the hydrolysis of ATP causes them to change shape and pull the actin filaments along horizontally.
A stem cell is an undifferentiated cell, that has the potential to become a specialised cell.
Generally, molecules are coloured as they absorb visible frequencies of light, to promote an electron to a higher energy level, so the other (complementary) frequencies of light pass through the sample an...
Make lists of useful vocabulary for the main topics covered throughout the course, as these will come in handy during the exam. Try and go over these and test yourself in the days before the exam. A pract...
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