AP BIOLOGY

Detailed explanation-1: -Carbohydrate in the form of glucose is the main source of energy for most metabolic processes in the body. Lipids provide essential fatty acids for brain development and are an important source of energy. Together carbohydrates and lipids provide the non-nitrogen energy in parenteral nutrition (PN).

Detailed explanation-2: -Because lipids have high proportion of C-H bonds which store the chemical potential energy in a much effective way. Carbs on the other hand, have high ratio of C-O bonds because of glycosidic linkages so they do not store as much energy in their bonds.

Detailed explanation-3: -One of the reasons low-fat diets are recommended for weight loss is because fats, also called lipids, contain more calories per gram, and thus more energy, than carbohydrates or proteins.

Detailed explanation-4: -Carbohydrates and lipids both contain carbon (C), hydrogen (H), and oxygen (0); proteins contain these three elements plus one or more from nitrogen (N), sulphur (S) and phosphorous (P).

Detailed explanation-5: -Answer and Explanation: Carbohydrates and lipids are alike in the fact that they are both types of organic molecules found in living organisms. This means that they consist of many carbon atoms with oxygen and hydrogen bonded to them. Both carbohydrates and lipids are energy sources for living things.