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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.
1 a) Trachea, bronchi, bronchioles, alveoli,diaphragm
b) It is a muscle important in the function of respiration
On inhalation, the diaphragm CONTRACTS and FLATTENS. Air is drawn INTO ...
When an individual's blood glucose concentration rises above the normal range (approximately 70-100mmol/100cm^3), alpha cells in the Islets of Langerhans in the pancreas detect this change and release glu...
The first reason is that the genetic code is redundant. This means that even though different codons have different matching t-RNAs and therefore usually different amino acids, some codons are matched wit...
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