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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...
A mutation can occur, causing the formation of an antibiotic resistant gene within a bacteria. This bacteria will then survive the course of antibiotics and reproduce, passing on the gene by vertical gene...
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