HNF 150 Final Exam All Answers Correct
Nutrient density ✔️✔️Nutrient density refers to having a lot of nutrients in food compared to the
amount of calories.
Identify the six classes of nutrients ✔️✔️1. water
2. carbohydrates
3. minerals
4. vitamin
5. fats
6. proteins.
Here’s a fresh set of questions and answers tailored for final exam preparation in HNF 150:
What is the primary role of carbohydrates in the body?
Carbohydrates provide a primary source of energy for the body, particularly for the brain and muscles
during physical activity. ✔️✔️
How do antioxidants protect the body from oxidative stress?
Antioxidants neutralize free radicals, which are unstable molecules that can damage cells and increase
the risk of chronic diseases such as cancer and heart disease. ✔️✔️
What is the significance of dietary fiber for digestive health?
Dietary fiber promotes regular bowel movements, prevents constipation, supports gut health, and may
reduce the risk of colon cancer. ✔️✔️
What is the difference between fat-soluble and water-soluble vitamins?
Fat-soluble vitamins (A, D, E, K) are stored in fat tissues and the liver, while water-soluble vitamins (B-
complex vitamins and vitamin C) are not stored and are excreted in urine. ✔️✔️
,How does the body use protein for muscle repair?
Proteins are broken down into amino acids, which are then used to rebuild and repair muscle tissue
after physical activity or injury. ✔️✔️
What is the role of the liver in nutrient metabolism?
The liver processes nutrients absorbed from the digestive tract, converts glucose into glycogen for
storage, synthesizes proteins, and detoxifies harmful substances. ✔️✔️
Why is it important to maintain a balance between omega-3 and omega-6 fatty acids?
A proper balance between omega-3 and omega-6 fatty acids helps regulate inflammation, supports
heart health, and contributes to overall well-being. ✔️✔️
How does vitamin D support bone health?
Vitamin D enhances calcium absorption in the intestines, helping to maintain strong bones and prevent
conditions like osteoporosis and rickets. ✔️✔️
What are the risks of consuming excessive amounts of sodium?
Excess sodium can increase blood pressure, strain the heart and kidneys, and increase the risk of stroke,
heart disease, and kidney disease. ✔️✔️
Why is hydration important during physical activity?
Adequate hydration supports muscle function, prevents dehydration, regulates body temperature, and
enhances endurance and performance during exercise. ✔️✔️
How does the body regulate blood sugar levels?
The pancreas releases insulin to lower blood sugar when levels are high and glucagon to raise blood
sugar when levels are low, maintaining homeostasis. ✔️✔️
What is the impact of caffeine on the body?
Caffeine stimulates the central nervous system, increases alertness, and may temporarily raise
metabolism, but excessive intake can lead to anxiety, insomnia, and dehydration. ✔️✔️
, Why is it essential to consume a variety of micronutrients from different food sources?
Different micronutrients support various bodily functions, and consuming a range ensures that all
nutrient needs are met, promoting overall health. ✔️✔️
What is the role of the gut microbiome in health?
The gut microbiome supports digestion, immune function, and nutrient absorption, and a balanced
microbiome may reduce the risk of gastrointestinal issues and other chronic diseases. ✔️✔️
How does high fiber intake benefit heart health?
Fiber helps lower LDL cholesterol, reduces blood pressure, and improves blood vessel function, all of
which contribute to better cardiovascular health. ✔️✔️
What is the effect of a vitamin B12 deficiency?
A vitamin B12 deficiency can lead to fatigue, anemia, nerve damage, and cognitive issues, especially in
older adults and individuals on a vegetarian or vegan diet. ✔️✔️
How do enzymes aid in digestion?
Enzymes break down large food molecules into smaller components, such as carbohydrates into sugars,
proteins into amino acids, and fats into fatty acids, facilitating nutrient absorption. ✔️✔️
Why is iron essential for the body?
Iron is crucial for producing hemoglobin, which carries oxygen in the blood, and is essential for energy
production and immune function. ✔️✔️
What is the role of potassium in maintaining health?
Potassium helps regulate fluid balance, supports normal muscle and nerve function, and helps maintain
a healthy blood pressure level. ✔️✔️
How does alcohol affect metabolism?
