NURSING EXAM QUESTIONS
BIOCHEMISTRY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
carbohydrates
|
|
lipids
|
|
proteins
|
|
nucleic acids
|
Detailed explanation-1: -Explanation: There are four classes of biological molecules: fats, carbohydrates, proteins, and nucleic acids. Of these, fats produce the most energy per gram at a whopping nine calories per gram.
Detailed explanation-2: -Glucose, a 6-carbon sugar, is a simple carbohydrate or “mono-saccharide.” Sugar is a source of quick energy for the body because it is easily metabolized (broken down).
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: -Each gram of fat supplies the body with about 9 calories, more than twice that supplied by proteins or carbohydrates.
Detailed explanation-5: - Lipids have more carbon-hydrogen bonds than carbohydrates, thus contain more energy per gram than carbohydrates or proteins, which explains why fats have a greater caloric value.