Energy Metabolism and Weight Management (NR 228 Week 3) ACTUAL EXAM 2026 | Chamberlain | Verified Q&A | Pass Guaranteed - A+ Graded

NR 228 Week 3: Energy Metabolism & Weight Management — Practice Questions



SECTION 1: Energy Sources & Macronutrients

Question 1

Which three macronutrients provide energy for the body? (Select all that apply)

 A) Water

 B) Proteins

 C) Fiber

 D) Fats

 E) Carbohydrates

Answer: B, D, E

Rationale: Proteins, fats, and carbohydrates are the three energy-yielding macronutrients. Water is
essential for life but provides no calories. Fiber is a type of carbohydrate that aids digestion but is not
fully digested or absorbed for energy.



Question 2

What is the primary energy currency that fuels all body processes?

 A) Acetyl coenzyme A

 B) Glucose-6-phosphate

 C) Adenosine triphosphate (ATP)

 D) Adrenaline

Answer: C

Rationale: ATP is the body's universal energy currency. It traps energy released from the breakdown of
macronutrients and delivers it to power cellular processes. Acetyl-CoA enters the citric acid cycle,
glucose-6-phosphate is an intermediate in glucose metabolism, and adrenaline is a hormone—not an
energy molecule.

,Question 3

Which pathway describes anabolism?

 A) Breaks down large molecules to produce energy

 B) Combines small molecules into larger ones using energy

 C) Requires oxygen

 D) Produces ATP

Answer: B

Rationale: Anabolic pathways are energy-requiring processes that build complex molecules from simpler
ones (e.g., glycogen synthesis from glucose, lipogenesis from fatty acids and glycerol). Catabolism is the
opposite—breakdown reactions that release energy.



Question 4

Which pathway describes catabolism?

 A) Combines small molecules into larger ones using energy

 B) Breaks down large molecules to produce energy

 C) Stores excess nutrients

 D) Requires no energy

Answer: B

Rationale: Catabolic pathways break down large molecules (glucose, fatty acids, amino acids) into
smaller units, releasing energy stored as ATP. Cellular respiration is the prime example: glucose + oxygen
→ CO₂ + H₂O + ATP.



Question 5

Which foods are appropriate sources for carbohydrate storage?

 A) Avocados, cashews, coconut oil

 B) Whole wheat bread and gluten-free pasta

 C) Eggs, cheese, chicken breast

,  D) Leafy green vegetables

Answer: B

Rationale: Carbohydrates are stored as glycogen in liver and muscle. Dietary sources include grains,
bread, pasta, fruits, and starchy vegetables. These are broken down into glucose during digestion for
energy and storage.



Question 6

Which foods are appropriate sources for fat storage?

 A) Whole wheat bread and gluten-free pasta

 B) Avocados, cashews, and coconut oil

 C) Eggs, cheese, and chicken breast

 D) Leafy green vegetables

Answer: B

Rationale: Dietary fats are broken down into glycerol and fatty acids, then stored as triglycerides in
adipose tissue. Avocados, nuts, seeds, and oils are rich sources of dietary fat.



Question 7

Which foods are appropriate sources for protein storage and tissue repair?

 A) Whole wheat bread and gluten-free pasta

 B) Avocados, cashews, and coconut oil

 C) Eggs, cheese, and chicken breast

 D) Leafy green vegetables

Answer: C

Rationale: Proteins are broken down into amino acids, which are used primarily for tissue repair,
enzyme synthesis, and hormone production—not typically stored for energy. Animal products (eggs,
dairy, meat) and legumes are primary protein sources.