Carbohydrates Polysaccharides Quiz

Which type of bond forms in starch?

• One to four glycosidic bonds

• One to six glycosidic bonds

• One to four and one to six glycosidic bonds

• One to two and one to six glycosidic bonds

Answer explanation

Starch is a polysaccharide comprised of glucose units. These units are linked by glycosidic bonds, specifically one to four and one to six glycosidic bonds. The one to four glycosidic bonds form linear chains, while the one to six glycosidic bonds result in branching. Therefore, both types of glycosidic bonds are present in starch.

Where is cellulose found?

• In animal cells

• In plant cells inside the cell wall

• In plant cells inside the chloroplasts

• In muscle and liver cells

Answer explanation

Cellulose is a complex carbohydrate and a primary component of plant cell walls. It is not found in animal cells, chloroplasts, or muscle and liver cells. Therefore, the correct answer to the question is that cellulose is found in plant cells inside the cell wall.

What is the function of glycogen?

• Structural strength

• Insoluble store of glucose

• Store of blue Ches

• Store of glucose for energy

Answer explanation

Glycogen serves as a form of energy storage in animals and fungi. The correct option is 'Store of glucose for energy'. This means that glycogen is the storage form of glucose in our body. It is used when the body needs a quick boost of energy or when the body isn't getting glucose from food.

What is the structure of amylopectin?

• Unbranched helix

• Branched polymer

• Long straight chains held by hydrogen bonds

• Highly branched polymer

Answer explanation

Amylopectin, a component of starch, is structured as a highly branched polymer. Unlike linear polymers, the branches allow for greater solubility and rapid metabolism. The other options - unbranched helix, branched polymer, and long straight chains held by hydrogen bonds - do not accurately describe amylopectin's structure.

Where is glycogen found?

• In plant cells inside the cell wall

• In plant cells inside the chloroplasts

• In animal cells in the muscle and liver cells

• In animal cells in the nucleus

Answer explanation

Glycogen is a form of energy storage in animals and is primarily found in the cells of the liver and muscles. It is not found in plant cells or in the nucleus of animal cells, making 'In animal cells in the muscle and liver cells' the correct answer.

What is the monomer of cellulose?

• Alpha glucose

• Beta glucose

• Fructose

• Sucrose

Answer explanation

Cellulose is a complex carbohydrate, or polysaccharide, consisting of 3000 or more glucose units. The specific monomer or building block of cellulose is beta glucose. Each beta glucose molecule is oriented 180° relative to its neighbors, resulting in a linear, fibrous structure that is characteristic of cellulose.

What provides structural strength in plants?

• Starch

• Glycogen

• Cellulose

• Amylopectin

Answer explanation

Cellulose is the correct answer because it is a complex carbohydrate that provides structural strength in plants. It is found in the cell walls of plants and helps maintain their shape and resist mechanical stresses. On the other hand, Starch, Glycogen, and Amylopectin are used mainly for energy storage in plants and animals, not for structural support.

What is the function of starch?

• Structural strength

• Insoluble store of glucose

• Store of blue Ches

• Store of glucose for energy

Answer explanation

Starch serves as an insoluble store of glucose in plants. It is not used for structural strength, and it does not store blue Ches. It does store glucose for energy, but the key is that it's an insoluble store. This makes 'Insoluble store of glucose' the correct answer.

What is the structure of glycogen?

• Unbranched helix

• Branched polymer

• Long straight chains held by hydrogen bonds

• Highly branched polymer

Answer explanation

Glycogen, a form of energy storage in animals and fungi, is a highly branched polymer. Unlike unbranched helices or long straight chains, glycogen's structure allows for rapid glucose release. Its high degree of branching also distinguishes it from polymers with less branching.

What is the function of cellulose?

• Structural strength

• Insoluble store of glucose

• Store of blue Ches

• Store of glucose for energy

Answer explanation

Cellulose serves the function of providing structural strength to plants. It is a complex carbohydrate that forms the primary part of plant cell walls. This helps keep the plant rigid and upright. The other options, including 'Insoluble store of glucose,' 'Store of blue Ches,' 'Store of glucose for energy' are incorrect because they do not represent the main function of cellulose.