Answer: Option A. Explanation: Starch and cellulose are polymers of glucose and are formed by monomers of glucose joined together. Starch is formed from alpha glucose, cellulose is formed from beta glucose.
What is true of both starch and cellulose?
Starch and cellulose are two very similar polymers. In fact, they are both made from the same monomer, glucose, and have the same glucose-based repeat units . There is only one difference. In starch, all the glucose repeat units are oriented in the same direction.
What is starch and cellulose for?
Starch can be straight or branched and is used as energy storage for plants because it can form compact structures and is easily broken down. In cellulose, molecules are connected in opposite orientations. Cellulose is found in cell walls and gives plant cells protection and structure.
Which of the following is correct regarding starch and cellulose?
Description for Correct answer: Starch and cellulose both are plant origin . Starch deposits in plant cells, whereas cellulose is most important constituent of plant cell wall. Both starch and cellulose are polymers.
How are starches and cellulose similar quizlet?
Terms in this set (4)
Name 2 similarities between starch and cellulose. Both are made from glucose monomers, and both exist in plants. ... Cellulose is used for structural support whereas starch is used for energy storage. Cellulose uses beta linkages while starch uses alpha linkages.
What is the major difference between starch and cellulose?
There is one major difference between Starch and Cellulose. For starch, glucose repeat units are located in the same direction, and each successive glucose unit is rotated 180 degrees in cellulose. Cellulose is thicker than sugar, which is water-insoluble.
What is the structural difference between starch and cellulose?
Cellulose is mostly linear chains of glucose molecules bound by beta 1,4 glycosidic bonds while starch is present in both linear and branched chains. Why is Cellulose Stronger than Starch? They are bound together in cellulose, so that opposite molecules are rotated 180 degrees from one another.
What is the function of cellulose?
Cellulose, a tough, fibrous, and water-insoluble polysaccharide, plays an integral role in keeping the structure of plant cell walls stable . Cellulose chains are arranged in microfibrils or bundles of polysaccharide that are arranged in fibrils (bundles of microfibrils), which in turn make up the plant cell wall.
Why can’t we digest cellulose as easily as starch?
The reason is due to the different types of bonding between cellulose and starch . Cellulose has beta-1,4 bonds that are not digested by our enzymes (which can digest alfa-1,4 and alfa-1,6 bonds that are present in starch and glycogen).
Why can humans digest starch and not cellulose?
Humans can digest starch but not cellulose because humans have enzymes that can hydrolyze the alpha-glycosidic linkages of starch but not the beta-glycosidic linkages of cellulose . ... The enzyme amylase can break glycosidic linkages between glucose monomers only if the monomers are linked via the alpha form.
What is called cellulose?
Cellulose is a molecule , consisting of hundreds – and sometimes even thousands – of carbon, hydrogen and oxygen atoms. Cellulose is the main substance in the walls of plant cells, helping plants to remain stiff and upright. Humans cannot digest cellulose, but it is important in the diet as fibre.
What is starch is composed of?
Starch is a chain of glucose molecules which are bound together, to form a bigger molecule, which is called a polysaccharide. There are two types of polysaccharide in starch: Amylose – a linear chain of glucose. Amylopectin – a highly branched chain of glucose.
Is artificial silk is derived from cellulose?
Artificial silk or rayon is made up of cellulose , which is obtained from cotton or wood pulp the cellulose is made to dissolve in a substance called alkaline carbon disulphide to make a thick liquid.
What do starch and cellulose have in common quizlet?
What does starch and cellulose have in common? They are both the storage form of glucose in plants . It is a highly branched polymer of glucose molecules, found in liver and muscle cells, and it is the storage form of glucose in animals. It’s made of straight chains of glucose molecules and some chains are branched.
What is the difference between starch and cellulose quizlet?
What is the difference between starch and cellulose? In cellulose, the glucose monomers are assembled in an alternating pattern . In starch, the glucose monomers are not alternated. (The glucose monomers of starch are assembled facing in the same direction each time.
What is the primary function of cellulose quizlet?
Cellulose: Used for structural support in walls of plants and many algae . Chitin: Used for structural support in the cell walls of fungi and the external skeletons of insects and crustaceans. Peptidoglycan: Used for structural support in bacterial cell walls.
