Tag: role of various nutrients

Questions Related to role of various nutrients

A pound of butter contains more usable energy than a
pound of sugar for a human because

evs nutritious food minerals and vitamins nutrition and diet role of various nutrients

  1. Sugar contains much more water than butter

  2. A fat molecule has more carbon-hydrogen bonds than a

    sugar molecule

  3. The butter is an animal product, where as the sugar is a

    Plant Product

  4. There is much more waste in digestion and absorption

    of sugar than of butter

Show answer
Correct Option: B
Explanation:

A pound of butter contains more usable energy than a pound of sugar for a human because a fat molecule has more carbon-hydrogen bonds than a sugar molecule. Butter contains fat molecules and sugar contains carbohydrates. Fat molecule have low ratio of oxygen and hydrogen comparison to carbohydrates and they have more carbon-hydrogen bonds than carbohydrates.

Which of the following is not a source of fats obtained from animals?

biology a healthy diet minerals and vitamins nutrition and diet role of various nutrients

  1. Butter

  2. Cream

  3. Coconut oil

  4. Cod liver oil

Show answer
Correct Option: C
Explanation:
  • Coconut oil is a source of fat obtained from plants, while rest all i.e. butter, cream, and cod liver oil are obtained from animals. Thus option C is the correct answer. 

Which of the following are sources of fats?

biology a healthy diet minerals and vitamins nutrition and diet role of various nutrients

  1. Oil, ghee, butter

  2. Eggs

  3. Rice, wheat, potato

  4. Iron and calcium

Show answer
Correct Option: A
Explanation:

Oil, ghee and butter source of fats; egg source of proteins; rice, wheat, potato source of carbohydrates; iron and calcium are essential minerals.

Lipids are generally

biology a healthy diet minerals and vitamins nutrition and diet role of various nutrients

  1. A high energy source

  2. Hydrophobic

  3. Composed of fatty acids

  4. All of the above

Show answer
Correct Option: D
Explanation:

Lipids are a group of naturally occurring molecules that include fats, waxes, sterols, fat-soluble vitamins (such as vitamins A, D, E, and K), monoglycerides, diglycerides, triglycerides, phospholipids, and others. They are the most calorigenic among the biomolecules. Chemically lipids are hydrophobic.

Among the energy values of nutrients, 9.3 calories is that of

biology a healthy diet minerals and vitamins nutrition and diet role of various nutrients

  1. Fats

  2. Proteins

  3. Vitamins

  4. Carbohydrates

Show answer
Correct Option: A
Explanation:

On oxidation of 1gm of fat energy yield is 9.3 cal. For carbohydrate and proteins, the energy value is roughly around 4 cal. Vitamins are not energy yielding compounds.

Predominant form of lipid present in biomembranes

biology a healthy diet minerals and vitamins nutrition and diet role of various nutrients

  1. Free fatty acids

  2. Cholesterol

  3. Triacylglycerols

  4. Phospholipids

Show answer
Correct Option: D
Explanation:

The predominant lipids present in the biomembrane are phospholipids, having a polar water soluble phosphorous head and a non polar long aliphatic tail. The polar head is exposed on the surface while the hydrophobic tail remains buried inside.

Death of intestinal bacteria will cause

biology a healthy diet minerals and vitamins nutrition and diet role of various nutrients

  1. Blindness

  2. Tired feeling

  3. Reduced synthesis of B-complex and K-vitamins

  4. Reduced excretion

Show answer
Correct Option: C

Which one is correct matching for vitamin, its nature and deficiency disease

biology a healthy diet minerals and vitamins nutrition and diet role of various nutrients

  1. Vitamin A Fat soluble Night blindness

  2. Vitamin K - Fat soluble Beri-beri

  3. Vitamin A Fat soluble Beri-beri

  4. Vitamin K Water soluble Pellagra

Show answer
Correct Option: A

Which group of three of following statements (1 5) contains all the three statements regarding beri-beri
1. A crippling disease prevalent among the native population of Africa
2. A deficiency disease caused by lack of thiamine
3. A nutritional disorder in infants and young children
4. Occurs in those countries where the staple diet is polished rice
5. The symptoms are pain from neutritis, paralysis, muscle wasting, progressive oedema, mental deterioration and finally heart failure

biology a healthy diet minerals and vitamins nutrition and diet role of various nutrients

  1. 2, 4, 5

  2. 1, 2, 4

  3. 1, 3, 5

  4. 2, 3, 5

Show answer
Correct Option: A

Steroid is a/an

biology health and hygiene - food for living minerals and vitamins nutrition and diet role of various nutrients

  1. Cholesterol

  2. Vitamin

  3. Organic compound

  4. Fatty acid ester

Show answer
Correct Option: A
Explanation:

Steroids like cholesterol are crystallisable lipids having four hydrocarbon rings (phenanthrene, consisting of three cyclohexane and one cyclopentane) and a long hydrocarbon side chain. Fatty acids are absent. Sterols are precursors of steroid hormone and vitamin D. They are essential for plant growth and flowering. Cholesterol forms bile salts and hence, essential for absorption of fatty acids.