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• Cystic fibrosis is an autosomal recessive disorder, which is caused by a mutation in the CFTR (cystic fibrosis transmembrane conductance regulator) gene. • The defective CFTR protein does not allow Cl...

Depending on the expression how to expand and simplify is different. Commonly for two brackets back to back these are expanded by the FOIL method. Multiply together the two first parts of the brackets, th...

we need to have a common denominator (bottom number the same) to be able to add or subtract fractionsmultiply first fraction by (x+4) on numerator (top) and denominator (bottom)multiply second fraction by...

• acid in stomach kills pathogens in food• skin forms a barrier / produces antimicrobial secretions• hairs in the nose trap (particles which may contain) pathogens• trachea / bronchi has mucus which traps...

One strength of the biological approach is that it is a very scientific approach. The biological area often uses measurable and objective measures such as experiments and scanning techniques. For example,...