Which one of the following polymers does not contain glucose units?

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Q: 63 (CDS-II/2017)

Which one of the following polymers does not contain glucose units?

question_subject: 

Science

question_exam: 

CDS-II

stats: 

0,46,33,16,7,10,46

keywords: 

{'glucose units': [0, 0, 0, 1], 'cellulose': [2, 1, 2, 0], 'polymers': [0, 1, 0, 2], 'glycogen': [1, 0, 0, 0], 'starch': [1, 0, 0, 0], 'rubber': [0, 0, 0, 1]}

The correct answer is option 4, Rubber.

Let`s analyze each option to understand why it is or isn`t a polymer containing glucose units:

Option 1: Glycogen is a polymer that consists of glucose units linked together. It serves as an energy storage molecule in animals.

Option 2: Starch is a polymer that is made up of glucose units joined together. It is found in plants and serves as a source of energy.

Option 3: Cellulose is also a polymer composed of glucose units. It makes up the cell walls of plants and provides structural support.

Option 4: Rubber is not a polymer that contains glucose units. It is an elastic polymer made up of repeating units of isoprene. It is used in various applications, such as tires and rubber bands.

In summary, while all the other options (glycogen, starch, and cellulose) contain glucose units, rubber does not.