CDN Clinical Nutrition & Assessment

Question 1

What is the primary function of carbohydrates in the human body?

Accepted Answer

To provide energy

Answer

Carbohydrates are the body's main source of energy, being readily converted into glucose for immediate use by cells. This energy powers all bodily functions, from brain activity to muscle contraction, making them essential for daily living.

Question 2

Which of the following is a function of proteins in the body?

Accepted Answer

Supporting enzyme and hormone production

Answer

Proteins are crucial for synthesizing enzymes, which act as catalysts for nearly all biochemical reactions, and hormones, which regulate various bodily processes. They also play vital roles in structural support, transport, and immune defense.

Question 3

What role do vitamins play in metabolism?

Accepted Answer

They help enzymes perform metabolic functions

Answer

Vitamins function as coenzymes or cofactors, which are essential for enzymes to catalyze metabolic reactions efficiently. They do not provide energy directly but are critical for processes like energy production, nutrient utilization, and cellular repair.

Question 4

How do lipids contribute to metabolism?

Accepted Answer

They store energy, form cell membranes, and produce hormones

Answer

Lipids serve as a concentrated, long-term energy reserve for the body. They are also fundamental components of all cell membranes, providing structural integrity, and are precursors for the synthesis of vital hormones, including steroid hormones.

Question 5

What is the role of water in metabolism?

Accepted Answer

It regulates body temperature and aids digestion

Answer

Water is indispensable for metabolism, acting as a solvent for nutrients and waste products, and participating in numerous biochemical reactions. It also plays a critical role in maintaining body temperature through sweating and is essential for the proper breakdown and absorption of food in the digestive system.

(CDN) Certified Dietician Nutritionist Practice Test

(CDN) Certified Dietician Nutritionist Practice Test

CDN Clinical Nutrition & Assessment