Diet：练习题

What is the principal importance of carbohydrates in a human diet?

A child living in a high-latitude region with very little sunlight exposure presents with bowed legs and bone pain. Which dietary deficiency and corresponding biological reason explain this condition?

Which of the following describes the most balanced approach to preventing coronary heart disease (CHD) through diet?

Which of these is the most significant dietary source of Vitamin D?

Which statement best describes the importance of including Vitamin C in a balanced diet?

State one importance of dietary fibre (roughage) in a balanced human diet.

Contrast the biological importance of carbohydrates and fats as dietary components for energy management in the body.

Explain the importance of fibre (roughage) in a balanced diet and the physiological consequence of its absence in the alimentary canal.

(a) Explain what is meant by a balanced diet.
(b) Name two essential mineral ions and two vitamins, and for each, state its importance in the human body.
(c) Describe the dietary causes of scurvy and rickets.

A person's diet is found to be high in processed sugars but extremely low in fibre (roughage).
(a) Describe how a lack of fibre affects the movement of food through the alimentary canal.
(b) State the name of the medical condition that often results from this deficiency.