Question 1

What is a lipid-digesting enzyme?&#10;A) trypsin&#10;B) pancreatic lipase&#10;C) amylase&#10;D) none of the above

Accepted Answer

Lipid-digesting enzymes specifically break down fats and lipids. Of the options given, only pancreatic lipase fits this characteristic. Trypsin and amylase are enzymes that break down proteins and carbohydrates, respectively. Therefore, the best choice is B - pancreatic lipase.

Question 2

A dietary source of proteins includes ________.&#10;A) bread&#10;B) butter&#10;C) meat&#10;D) none of the above

Accepted Answer

Meat is a dietary source of proteins as it contains all essential amino acids required by the body for growth and repair. Bread and butter are not significant sources of proteins.

Question 3

Which of the following is a protein-digesting enzyme?&#10;A) pancreatic lipase&#10;B) amylase&#10;C) trypsin&#10;D) none of the above

Accepted Answer

Trypsin is a protein-digesting enzyme that is secreted by the pancreas and acts in the small intestine to break down proteins into smaller peptides. Pancreatic lipase, on the other hand, is a fat-digesting enzyme, while amylase is a carbohydrate-digesting enzyme. Therefore, options A and B are incorrect.

Question 4

The chemical breakdown of food is ________.&#10;A) catalysts&#10;B) anabolism&#10;C) catabolism&#10;D) none of the above

Accepted Answer

Catabolism refers to the breakdown of molecules, including food molecules, to release energy. This process involves enzymes and is a key step in metabolism. Catalysts and anabolism are not correct choices as they do not directly relate to the breakdown of food.

Question 5

A ________ is a simple sugar with one saccharide.&#10;A) disaccharide&#10;B) monosaccharide&#10;C) polysaccharides&#10;D) none of the above

Accepted Answer

Monosaccharides are simple sugars that can't be broken down into simpler sugars. They have only one unit of saccharide, unlike disaccharides (two units) and polysaccharides (many units). Examples of monosaccharides include glucose, fructose, and galactose.

Question 6

Sucrose is a ________.&#10;A) monosaccharide&#10;B) disaccharide&#10;C) triglyceride&#10;D) polysaccharide

Accepted Answer

Sucrose is a disaccharide, which means it is made up of two monosaccharides (glucose and fructose) joined together.

Question 7

Complex carbohydrates are stored in the body as ________.&#10;A) cholesterol&#10;B) glucose&#10;C) glycogen&#10;D) triglycerides

Accepted Answer

Complex carbohydrates are broken down into glucose for energy, but any excess glucose is stored in the liver and muscles as glycogen. This stored glycogen can be used later for energy during exercise or other physical activity.

Question 8

What is a carbohydrate-digesting enzyme?&#10;A) amylase&#10;B) trypsin&#10;C) pancreatic lipase&#10;D) elastase

Accepted Answer

Amylase is the enzyme responsible for digesting carbohydrates in the human digestive system.

Question 9

In an enzymatic reaction, reactants are called ________.&#10;A) products&#10;B) catalysts&#10;C) substrates&#10;D) none of the above

Accepted Answer

Reactants in an enzymatic reaction are called substrates. Products are the end result of the reaction, catalysts are substances that speed up the reaction but are not consumed in the process, and the option for none of the above is not applicable as one of these options must be correct.

Question 10

Most dietary lipids are ________.&#10;A) starches&#10;B) monosaccharides&#10;C) triglycerides&#10;D) polysaccharides

Accepted Answer

Triglycerides are the main dietary lipids, consisting of three fatty acid chains attached to a glycerol molecule. Starches and polysaccharides are types of carbohydrates, while monosaccharides are simple sugars.

Question 11

Which statement is FALSE regarding enzymes?&#10;A) Enzymes raise activation energy.&#10;B) Enzymes are catalysts.&#10;C) Enzymes are composed mostly of proteins.&#10;D) none of the above

Accepted Answer

The answer of Which statement is FALSE regarding enzymes?&#10;A) Enzymes...

Question 12

Anabolism includes reactions in which ________.&#10;A) structural proteins are broken down&#10;B) carbohydrate utilization increases&#10;C) larger molecules are made from smaller ones&#10;D) none of the above

Accepted Answer

The answer of Anabolism includes reactions in which ________.&#10;A) structural...

Question 13

Which of the following constitutes a long chain of simple sugars?&#10;A) polysaccharides&#10;B) proteins&#10;C) monosaccharides&#10;D) nucleic acids

Accepted Answer

The answer of Which of the following constitutes a long...

Deck 42: Digestive Physiology