Tag: digestion

Cystic Fibrosis – Diseases Ep 3

cystic fibrosis CFTR protein

Cystic fibrosis is an inherited disorder affecting specific channel proteins in cell membranes. In this article we will look at how it is inherited, how chloride ion transport is affected, and the symptoms which develop as a consequence. Inheritance of cystic fibrosis Cystic fibrosis is an inherited recessive disorder, meaning it is caused by a … Read more

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Digestion – Exchange and Transport Ep 13

Diagram showing how large lipid droplets are digested to micelles using bile salts and lipase.

So far in the exchange and transport series we have mainly been looking at exchange and transport of gases. However, organisms also need to absorb nutrients such as glucose and amino acids so they can carry out processes like respiration and protein synthesis. In this article we will cover how large food molecules are broken … Read more

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Active Transport – Exchange and Transport Ep 4

So far we have looked at the passive movement of substances across cell membranes by diffusion and osmosis. Sometimes substances need to move against a concentration gradient, which is when active transport comes into action. Active transport Active transport uses energy from ATP to transport substances from an area of low concentration to an area … Read more

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