The Role of Haemoglobin Transport of oxygen The majority of oxygen transported around the body is bound to the protein haemoglobin in red blood cells Red blood cells are also known as erythrocytes ...
The Haemoglobin Group The haemoglobins are a group of chemically similar molecules that are found in many different organisms For example chimpanzee, rats and humans are just some of the org...
Practical Skill: Visking Tubing Investigating the absorption of the products of digestion using Visking tubing Visking tubing (sometimes referred to as dialysis tubing) is a non-living parti...
Mechanisms of Absorption Digestion breaks down food into smaller, soluble molecules The products of digestion are absorbed through the intestinal lining The absorption of amino acids and mon...
Practical Skill: Investing Factors Affecting Enzyme Reaction Rates When an enzyme is kept in conditions that are outside its optimum pH the shape of its active site may change As a result, e...
Enzymes in Digestion Enzymes are substrate specific, meaning different enzymes digest and breakdown the different biological molecules contained in food Digestive enzymes are extracellular e...
Correlations & Causal Relationships - The Lungs Correlation is an association or relationship between variables Causation occurs when one variable has an influence or is influenced by an...
Investigating Risk Factors & the Incidence of Lung Disease A risk factor is any factor that correlates with (is linked to) an increased chance of suffering from a particular condition or...
The Effects of Pollution & Smoking on the Incidence of Lung Disease Exposure to pollution and smoking are well-known risk factors in relation to lung disease Environmental pollution sour...
