(Portage) BIOD121 Essentials in(Portage) BIOD121 Essentials in Nutrition Final Exam Guide (Portage) BIOD121 Essentials in Nutrition Final Exam Guide Nutrition Final Exam Guide
,1. What is the primary role of vitamin D in bone health?
A) Promotes absorption of calcium
B) Acts as an antioxidant
C) Provides structural strength
D) Enhances collagen synthesis
Correct Answer: A) Promotes absorption of calcium
Rationale: Vitamin D facilitates the absorption of calcium from
the gut, which is essential for the formation and maintenance of
strong bones.
2. Which nutrient deficiency is primarily associated with scurvy?
A) Vitamin C
B) Vitamin A
C) Iron
D) Vitamin D
Correct Answer: A) Vitamin C
Rationale: Scurvy is a disease resulting from a deficiency of
vitamin C, which is necessary for the synthesis of collagen in
humans.
,3. What is the role of omega-3 fatty acids in cardiovascular health?
A) They increase high-density lipoprotein (HDL)
B) They promote platelet aggregation
C) They reduce triglyceride levels
D) They are precursors to pro-inflammatory eicosanoids
Correct Answer: C) They reduce triglyceride levels
Rationale: Omega-3 fatty acids are known to reduce triglyceride
levels, which can help lower the risk of heart disease.
4. In the context of nutrition, what does the 'biological value' of a
protein refer to?
A) The cost-effectiveness of protein sources
B) The environmental impact of protein production
C) The proportion of absorbed protein that is incorporated into
proteins in the body
D) The amount of essential amino acids present in the protein
Correct Answer: C) The proportion of absorbed protein that is
incorporated into proteins in the body
Rationale: Biological value measures the proportion of absorbed
protein from a food which becomes incorporated into the proteins
of the organism's body.
, A) Vitamin K
B) Vitamin E
C) Vitamin D
D) Vitamin A
Correct Answer: A) Vitamin K
Rationale: Vitamin K is essential for the synthesis of proteins
required for blood coagulation.
6. What is the primary function of dietary fiber in the digestive
system?
A) To provide energy
B) To facilitate fat absorption
C) To regulate blood sugar levels
D) To aid in the movement of food through the digestive tract
Correct Answer: D) To aid in the movement of food through
the digestive tract
Rationale: Dietary fiber adds bulk to the diet and helps to move
food through the digestive system, preventing constipation and
aiding in digestion.
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