Personal Fitness Trainer - Qp14

Explanation
Food does provide the body with fuel for its activities, but it is not the only source of fuel. The body also uses stored energy in the form of fat and glycogen. Additionally, the body can produce energy through processes like gluconeogenesis and ketogenesis. Therefore, while food is an important source of fuel, it is not the only source, making the statement false.

Explanation
The six nutrient groups include protein, carbohydrates, and fats. These three macronutrients are essential for providing energy and supporting various bodily functions. Proteins are important for building and repairing tissues, while carbohydrates are the body's main source of energy. Fats also provide energy and help with the absorption of certain vitamins. Acids are not one of the six nutrient groups, so they are not included in the correct answer.

Explanation
The shell temperature is not the temperature maintained in structures below the skin and subcutaneous tissue. The shell temperature refers to the temperature of the external surface of an object or organism. It is the temperature that can be measured or felt from the outside.

Explanation
The answer is "Need or use 1200 kcals per 8 hours." This is because moderately active occupations require a moderate amount of energy expenditure, which is approximately 1200 kcals per 8 hours. This level of activity is higher than occupations that require 900 kcals per 8 hours but lower than occupations that require 1800 kcals per 8 hours. Therefore, the correct answer is 1200 kcals per 8 hours.

Explanation
The body consists of various nutrients, including protein, fat, carbohydrates, minerals and trace elements, and water. Protein makes up 15-20% of the body, providing essential amino acids for growth and repair. Fat contributes 4-7% of the body's composition, serving as a concentrated source of energy and insulation. Carbohydrates make up 1% of the body and are the primary source of energy. Minerals and trace elements, comprising 4-5% of the body, are crucial for various bodily functions. Water, constituting 65-70% of the body, is essential for maintaining hydration and facilitating various physiological processes. Vitamins are present in insignificant amounts in the body.

Explanation
The statement accurately reflects the main focus of the science of nutrition, which is the study of how food affects the body. It explores the relationship between nutrients and their impact on various bodily functions, such as metabolism, growth, and overall health. Understanding this interaction is crucial for developing dietary recommendations and strategies to promote optimal health and prevent diseases. Therefore, the answer "True" is correct.

Explanation
The explanation for the given correct answer is that the kilojoule is not the metric unit of measurement for heat and energy. The correct metric unit for heat and energy is the joule. The kilojoule is a derived unit of measurement that is equal to 1000 joules. Therefore, the statement is false.

Explanation
Metabolism refers to the collective set of chemical processes that take place in the body, resulting in various changes. These processes include the conversion of food into energy, the synthesis of molecules, and the breakdown of substances. Therefore, the given statement accurately defines metabolism as the sum of all changes occurring due to these chemical processes in the body. Hence, the answer is true.