What is a carbohydrate?
A carbohydrate is a long molecule made up of lots of individual units called monosaccharides. These units are sugars, including glucose, fructose and lactose.
When two of these units are bound together, it's called a disaccharide. When more than one are bound together in a chain, it is a polysaccharide - this is what starch is. Starch is a major component of a healthy diet, and is found in potatoes, bread, pasta and more.
NH
Related Biology GCSE answers
All answers ▸Describe the adaptations of the small intestine to help perform it's function
Lipids are molecules that are derived from
One form of muscle disease is caused by a mutant myosin allele. It prevents myosin from binding to other myosin molecules, thus preventing contraction. Suggest why.
A large amount of untreated sewage entered the river. Many fish died. Untreated sewage contains organic matter and bacteria. Explain why many fish died. (5)