BIOMOLECULES AND ENZYMES

BIOLOGY

POLYSACCHARIDES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is starch?
A
A compound that contains 70% of amylose
B
Energy storage molecule in plants
C
Energy producing molecule in plants
D
Molecule which stores water
Explanation: 

Detailed explanation-1: -Starch or amylum is a polymeric carbohydrate consisting of numerous glucose units joined by -(1→4)-D glycosidic bonds . This polysaccharide is produced by most green plants for energy storage.

Detailed explanation-2: -Starch serves as energy storage in plants. Glycogen is an even more highly branched polysaccharide of glucose monomers that serves the function of energy storage in animals. Glycogen is made and stored primarily in the cells of the liver and muscles.

Detailed explanation-3: -The chain coils in a spiral shape, held together by hydrogen bonds. This shape makes starch well suited to energy storage as it is compact, so takes up little space in the cell, and not very soluble in water, so does not affect the water potential of the cell.

Detailed explanation-4: -The molecule that plant cells use for long-term energy storage is starch. Starch is a polysaccharide, meaning it is polymer of many sugar molecules linked together.

Detailed explanation-5: -Starch is stored in chloroplasts in the form of granules and in such storage organs as the roots of the cassava plant; the tuber of the potato; the stem pith of sago; and the seeds of corn, wheat, and rice.

There is 1 question to complete.