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Structure of Glycogen and Cellulose Quiz

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Structure of Glycogen and Cellulose Quiz

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Questions and Answers

What type of polymer is cellulose?

A polymer of β-glucose (correct)

A polymer of fructose

A polymer of α-glucose

A polymer of galactose

In which structure do the hydroxyl (OH) groups of cellulose form hydrogen bonds with neighbouring chains?

In rigid microfibrils (correct)

In soluble sugars

In protein molecules

In long unbranched molecules

Which animals host bacteria that can digest cellulose into soluble sugars?

Cattle, horses, and termites (correct)

Cats and dogs

Chickens and ducks

Rabbits and guinea pigs

What is the major structural material of plant cell walls?

Cellulose Signup and view all the answers

Which carbohydrate is the most abundant organic compound on earth?

Cellulose Signup and view all the answers

Where are the glucose chains of glycogen organized?

As branches of a tree from a protein molecule Signup and view all the answers

Which of the following is a characteristic of polysaccharides?

Used as energy stores and structural materials Signup and view all the answers

Why are starch and glycogen suitable as energy storage molecules?

They fold into compact shapes within limited space and can be easily hydrolyzed Signup and view all the answers

Which component of starch has a straight chain structure?

Amylose Signup and view all the answers

What is the main reason why cellulose and chitin are suitable as structural materials?

Composed of long fibers with high tensile strength Signup and view all the answers

What is the characteristic that makes starch insoluble in cold water?

Presence of glycosidic bonds between glucose monomers Signup and view all the answers

Which type of macromolecule are polysaccharides like starch and glycogen?

Carbohydrates Signup and view all the answers

What gives a blue-black colour with iodine solution, and why?

Amylose, due to the slip of iodide complex into the α-helix coil Signup and view all the answers

Why does a suspension of amylopectin in water give a red-violet colour with iodine solution?

Due to little interaction between the iodide complex and amylopectin Signup and view all the answers

Which carbohydrate is the most common in human staple foods like rice, wheat, maize, cassava, and potatoes?

Starch Signup and view all the answers

Why is glycogen considered the animal equivalent of starch?

Due to its compact structure and insolubility in water Signup and view all the answers

Which compound is easily broken down into maltose and glucose by hydrolysis?