Questions and Answers | Latest
Version | 2025/2026 | Correct & Verified
What hormone is released by the stomach to signal hunger?
✔✔ Ghrelin
What type of nutrient provides the most energy per gram?
✔✔ Fat
What is the name of the process by which food is moved through the digestive tract by muscle
contractions?
✔✔ Peristalsis
What is the main site of nutrient absorption in the digestive system?
✔✔ Small intestine
What is the name of the enzyme that begins protein digestion in the stomach?
✔✔ Pepsin
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,What organ stores and concentrates bile?
✔✔ Gallbladder
What substance is produced by the liver to help emulsify fats?
✔✔ Bile
What is the name of the sphincter that separates the stomach from the small intestine?
✔✔ Pyloric sphincter
What is the primary function of the large intestine?
✔✔ Water absorption
What enzyme is found in saliva and helps begin carbohydrate digestion?
✔✔ Amylase
What part of the small intestine is responsible for the majority of nutrient absorption?
✔✔ Jejunum
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, What is the name of the finger-like projections that increase surface area in the small intestine?
✔✔ Villi
What vitamin is synthesized by bacteria in the large intestine?
✔✔ Vitamin K
What type of lipoprotein is known as “bad cholesterol”?
✔✔ LDL
What type of lipoprotein is known as “good cholesterol”?
✔✔ HDL
What mineral is required for oxygen transport in red blood cells?
✔✔ Iron
What hormone lowers blood glucose by promoting glucose uptake into cells?
✔✔ Insulin
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