Question

Draw a flow chart/concept map that illustrates the mechanism whereby the faulty cf gene causes the production of thick mucus with less water in it than normal.

Answer 1

So the flowchart should go like this:
Mutation in the CFTR gene >>>>>> Production of defective CFTR protein >>>>>> defective CFTR protein in cell membrane or no protein at all   >>>>>>>   Impaired ion transport across the cells   >>>>>>>   Cells secrete less chloride >>>>>>>   leads to more re-absorption of sodium and water into the cells   >>>>>>>   decreased hydration of mucus present outside the cells as more water is absorbed into the cells    >>>>>>>>   thick viscous mucus.