Food-Source of Energy For Man NDA Questions

NDA BIOLOGY

Food-Source of Energy For Man MCQ Questions


1.
Which macronutrient provides the highest energy per gram?
A.
Proteins (4 kcal/g)
B.
Dietary fibre (2 kcal/g)
C.
Carbohydrates (4 kcal/g)
D.
Fats (9 kcal/g)
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ANSWER :
D. Fats (9 kcal/g)
2.
The primary and most readily available source of energy for the human body is:
A.
Fats
B.
Carbohydrates
C.
Proteins
D.
Nucleic acids
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ANSWER :
B. Carbohydrates
3.
The energy value of carbohydrates and proteins per gram is respectively:
A.
4 kcal/g and 4 kcal/g
B.
9 kcal/g and 4 kcal/g
C.
4 kcal/g and 9 kcal/g
D.
7 kcal/g and 4 kcal/g
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ANSWER :
A. 4 kcal/g and 4 kcal/g
4.
Which of the following is a monosaccharide?
A.
Lactose
B.
Sucrose
C.
Glucose
D.
Starch
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ANSWER :
C. Glucose
5.
Glycogen is the storage form of carbohydrate in animals, stored mainly in:
A.
Brain and heart
B.
Liver and muscles
C.
Lungs and pancreas
D.
Kidneys and spleen
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ANSWER :
B. Liver and muscles
6.
Cellulose, which is the main component of plant cell walls, cannot be digested by humans because:
A.
It is toxic to the digestive enzymes
B.
It has too high a molecular weight
C.
It is a lipid, not a carbohydrate
D.
Humans lack the enzyme cellulase to break β-1,4-glycosidic bonds
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ANSWER :
D. Humans lack the enzyme cellulase to break β-1,4-glycosidic bonds