Nutrition 1020 Exam 3 Weber State
Questions and Correct Answers 2025-
2026 Updated.
Mechanical digestion - Answer The breaking down of big food parts into smaller ones,
involving muscles and nerves. Chewing(mastication)
Chemical digestion - Answer The breaking down of big food parts into smaller ones, involving
acid, enzymes, and hormones. Saliva and amylase (break down carbs).
What is an Enzyme? - Answer Protein that catalyze metabolic reactions, and are necessary for
most biochemical reactions to occur.
Examples of enzymes - Answer amylase: carbohydrates
protease: proteins
lipase: Lipids/Fats
What is a Hormone? - Answer Chemicals produced by cells, and secreted, then affect the
behavior of cells at distal sites in the body.
Examples of hormones and purpose? - Answer Secretin: released from duodenal cells and
sends signals to the pancreas to secrete digestive enzymes to the stomach to produce pepsin, a
protease enzyme, and to the liver to produce bile.
Cholecystokinin: released form duodenal cells and sends signals to the pancreas to secrete
digestive enzymes to the gallbladder to release bile.
Peristalsis - Answer a muscular wave action that occurs throughout the intestinal tract.
Stomach - Answer muscular organ and storage reservoir. It mechanically digests food by
mixing and churning. Chemically digests food with acid and some enzymes(pepsin). The food
then becomes chyme
Small Intestine Order - Answer Duodenum
Jejunum
, Gallbladder: stores bile
Pancreas: Makes enzymes, and makes sodium bicarbonate to neutralize stomach acid
Function of Bile - Answer Emulsifier: brings the fat to the enzymes
Passive(simple) Diffusion(transport) - Answer products pass freely across membrane, no
energy
Facilitated Diffusion(transport) - Answer water soluble vitamins diffuse across membrane
using a specific protein, needs a protein but no energy
Active Transport - Answer glucose and amino acids move across membrane against a
concentration gradient using a specific protein, and energy.
Duodenum absorbs what? - Answer many nutrients
Jejunum absorbs what? - Answer many nutrients
Ileum absorbs what? - Answer only selected nutrients
Colon absorbs what? - Answer water
Blood vessels transport what? - Answer water soluble nutrients
Lymphatic system transport what? - Answer fat soluble nutrients
Catabolic Reaction - Answer breaking down, involves hydrolysis reactions. degrading and
destructive in nature
Anabolic reactions - Answer Building up, involves condensation reactions. synthesizing or
constructive in nature.
Homeostasis - Answer balance of catabolic and anabolic reactions to keep a stable internal
Questions and Correct Answers 2025-
2026 Updated.
Mechanical digestion - Answer The breaking down of big food parts into smaller ones,
involving muscles and nerves. Chewing(mastication)
Chemical digestion - Answer The breaking down of big food parts into smaller ones, involving
acid, enzymes, and hormones. Saliva and amylase (break down carbs).
What is an Enzyme? - Answer Protein that catalyze metabolic reactions, and are necessary for
most biochemical reactions to occur.
Examples of enzymes - Answer amylase: carbohydrates
protease: proteins
lipase: Lipids/Fats
What is a Hormone? - Answer Chemicals produced by cells, and secreted, then affect the
behavior of cells at distal sites in the body.
Examples of hormones and purpose? - Answer Secretin: released from duodenal cells and
sends signals to the pancreas to secrete digestive enzymes to the stomach to produce pepsin, a
protease enzyme, and to the liver to produce bile.
Cholecystokinin: released form duodenal cells and sends signals to the pancreas to secrete
digestive enzymes to the gallbladder to release bile.
Peristalsis - Answer a muscular wave action that occurs throughout the intestinal tract.
Stomach - Answer muscular organ and storage reservoir. It mechanically digests food by
mixing and churning. Chemically digests food with acid and some enzymes(pepsin). The food
then becomes chyme
Small Intestine Order - Answer Duodenum
Jejunum
, Gallbladder: stores bile
Pancreas: Makes enzymes, and makes sodium bicarbonate to neutralize stomach acid
Function of Bile - Answer Emulsifier: brings the fat to the enzymes
Passive(simple) Diffusion(transport) - Answer products pass freely across membrane, no
energy
Facilitated Diffusion(transport) - Answer water soluble vitamins diffuse across membrane
using a specific protein, needs a protein but no energy
Active Transport - Answer glucose and amino acids move across membrane against a
concentration gradient using a specific protein, and energy.
Duodenum absorbs what? - Answer many nutrients
Jejunum absorbs what? - Answer many nutrients
Ileum absorbs what? - Answer only selected nutrients
Colon absorbs what? - Answer water
Blood vessels transport what? - Answer water soluble nutrients
Lymphatic system transport what? - Answer fat soluble nutrients
Catabolic Reaction - Answer breaking down, involves hydrolysis reactions. degrading and
destructive in nature
Anabolic reactions - Answer Building up, involves condensation reactions. synthesizing or
constructive in nature.
Homeostasis - Answer balance of catabolic and anabolic reactions to keep a stable internal
