Glycogen is best described as a

A. complex carbohydrate that is often stored in red blood cells

B. complete protein necessary for the synthesis of cell membranes

C. polysaccharide that is synthesized and stored within the human liver

D. by-product of sucrose digestion within the pancreas

Answer Explanation:

C) polysaccharide that is synthesized and stored within the human liver

- Correct: Glycogen is a polysaccharide, which means it is a complex carbohydrate composed of many glucose molecules linked together. It is synthesized and stored primarily in the liver and muscles of humans and other vertebrates. Glycogen serves as a form of energy storage, allowing organisms to store glucose for later use when energy demands are high or when glucose availability is low.

A) complex carbohydrate that is often stored in red blood cells

- Incorrect: While glycogen is a complex carbohydrate, it is not stored in red blood cells. Red blood cells do not contain nuclei or organelles, including glycogen storage structures.

B) complete protein necessary for the synthesis of cell membranes

- Incorrect: Glycogen is not a protein. It is a carbohydrate used for energy storage. Proteins are composed of amino acids and are involved in various cellular functions, including the synthesis of cell membranes, but glycogen does not play a direct role in this process.

D) by-product of sucrose digestion within the pancreas

- Incorrect: Glycogen is not a by-product of sucrose digestion within the pancreas. Sucrose is a disaccharide composed of glucose and fructose, and it is broken down into its component sugars by enzymes in the small intestine, not the pancreas. Glycogen is synthesized and stored in the liver and muscles as a form of energy storage.

Therefore, the Correct Answer is C.

Q #1: Base your answer to the following question on the diagram below. A digestive function of organ C is the synthesis and secretion of

A. salivary amylase

B. protease

C. hydrochloric acid

D. bile

Answer Explanation

Protease enzymes are responsible for breaking down proteins in our food into amino acids. Then different enzymes join amino acids together to form new proteins needed by the body for growth and repair. Protease enzymes are produced in pancreas.
Q #2: Which structure produces a substance that aids in the mechanical breakdown of fats?

A. liver

B. thyroid gland

C. testes

D. pituitary gland

Answer Explanation

A) liver

- Correct: The liver produces bile, a substance that aids in the mechanical breakdown of fats. Bile is stored in the gallbladder and released into the small intestine when needed. Bile emulsifies large fat globules into smaller droplets, which increases the surface area for the action of digestive enzymes. This process facilitates the breakdown of fats into smaller molecules for digestion and absorption.

B) thyroid gland

- Incorrect: The thyroid gland produces hormones that regulate metabolism but is not directly involved in the mechanical breakdown of fats.

C) testes

- Incorrect: The testes are reproductive organs responsible for the production of sperm in males and do not play a role in the mechanical breakdown of fats.

D) pituitary gland

- Incorrect: The pituitary gland is a master gland that produces and regulates various hormones but is not involved in the mechanical breakdown of fats.
Q #3: Which foods should be included in a balanced diet as a good source of roughage?

A. red meat and poultry

B. fresh fruits and vegetables

C. eggs and milk products

D. animal fat and plant oil

Answer Explanation

B) fresh fruits and vegetables

- Correct: Fresh fruits and vegetables are excellent sources of roughage, also known as dietary fiber. These foods provide insoluble fiber, soluble fiber, or a combination of both, which adds bulk to the stool and promotes healthy digestion. Insoluble fiber, found in foods like leafy greens, celery, and broccoli, helps to move food through the digestive tract, preventing constipation. Soluble fiber, found in foods like apples, oats, and beans, can help lower cholesterol levels and regulate blood sugar levels.

A) red meat and poultry

- Incorrect: While red meat and poultry are good sources of protein and other nutrients, they are not significant sources of dietary fiber or roughage. These foods do not contribute to the fiber content of the diet.

C) eggs and milk products

- Incorrect: Eggs and milk products are valuable sources of protein, vitamins, and minerals, but they are not significant sources of dietary fiber or roughage. These foods do not provide the fiber needed for healthy digestion.

D) animal fat and plant oil

- Incorrect: Animal fat and plant oils are sources of dietary fat, which is important for providing energy and essential fatty acids in the diet. However, they do not contain significant amounts of dietary fiber or roughage. These foods do not contribute to the fiber content of the diet.

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Glycogen is best described as a

More Questions on TEAS 7 Science

Q #1: Base your answer to the following question on the diagram below. A digestive function of organ C is the synthesis and secretion of

Answer Explanation

Q #2: Which structure produces a substance that aids in the mechanical breakdown of fats?

Answer Explanation

Q #3: Which foods should be included in a balanced diet as a good source of roughage?

Answer Explanation

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