NURSING EXAM QUESTIONS
BIOCHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
a polymer of glucose subunits
|
|
|
a fibrous protein
|
|
|
the linkage between glucose molecules
|
|
|
peptide linkage between amino acid
|
Detailed explanation-1: -Cellulose is indigestible because we lack the digestive machinery to break the bonds between the monosaccharides of cellulose and release the energy-rich glucose. Celllose is necessary to our diet because it is an excellent source of fiber.
Detailed explanation-2: -Answer and Explanation: All of these are functions of proteins except (d) storing genetic information of living things, which is the role of deoxyribonucleic acid (DNA). Structural proteins (a) provide structural components that provide strength and protection for biological structures (e.g. keratin in hair).
Detailed explanation-3: -While both starch and cellulose are made from glucose, starch is made out of the alpha formation and cellulose is made from beta glucose. In the digestive system, enzymes are able to break down alpha glucose, but not beta glucose. This is why the body can digest starch but not cellulose.