Question

Give scientific reasons.
a. Oxygen is necessary for complete
oxidation of glucose.
b. Fibers are one of the important
nutrients.​

Answer 1

Answer:

1. Absence of oxygen during glucose breakdown produces pyruvic acid and alcohol. ... Presence of oxygen during aerobic breakdown of glucose produces water and carbon dioxide along with the release of a large amount of energy. Hence, oxygen is necessary for the complete oxidation of glucose.
2. Fibers are one of the important nutrients because they help in the digestion of foods although they themselves are not digestible. They help in the egestion of undigested substances which is also a reason why we are advised to have fiber-rich food in case of constipation.

Explanation:

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Have a nice day ahead.

Answer 2

Answer:

• Besides carbohydrate, proteins, fats, vitamins, minerals, and water, fibers are also essential nutrients.  
• Fibers cannot be digested but, help in the digestion of other substances and egestion of undigested substances.