NURSING ANM AND GNM

NURSING EXAM QUESTIONS

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Glucose, starch, & cellulose are examples of which macromolecule?
A
carbohydrate
B
protein
C
lipid
D
nucleic acid
Explanation: 

Detailed explanation-1: -Polysaccharides are carbohydrates that are made of three or more glucose molecules. Glucose is a single sugar that has two main forms: alpha and beta, depending on the orientation of the alcohol group on the first carbon. Two important polysaccharides in plants are starch and cellulose.

Detailed explanation-2: -Cellulose is a polysaccharide produced by plants. Its is a component of the cell walls. Cellulose is also a string of glucose molecules. Because the glucoses are joined together differently cellulose has a different shape, and therefor different properties, than starch or glycogen.

Detailed explanation-3: -A starch macromolecule is a polysaccharide composed of thousands of glucose units.

Detailed explanation-4: -Starch, glucose, galactose, and cellulose are examples of carbohydrates.

Detailed explanation-5: -They can be broadly divided into two main groups; simple carbohydrates (or sugars) and complex carbohydrates (AKA starches). Common examples of simple carbohydrates include glucose, fructose, galactose, sucrose, lactose, and maltose. Examples of complex carbohydrates include starch, glycogen, and cellulose.

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