Tag: nutrition and diet

Quizzes (16) Questions (117)

Questions Related to nutrition and diet

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

Lipids are generally

  1. A high energy source

  2. Hydrophobic

  3. Composed of fatty acids

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

Predominant form of lipid present in biomembranes

  1. Free fatty acids

  2. Cholesterol

  3. Triacylglycerols

  4. Phospholipids
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

Death of intestinal bacteria will cause

  1. Blindness

  2. Tired feeling

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

  4. Reduced excretion
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Intestinal bacteria are responsible for the synthesis of several essential vitamins, including B-complex vitamins and Vitamin K. Their death or depletion leads to a deficiency in these nutrients.

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

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

  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
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Vitamin A is fat-soluble and its deficiency causes night blindness. Vitamin K is also fat-soluble, but its deficiency is related to blood clotting issues, not beri-beri.

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

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

  1. 2, 4, 5

  2. 1, 2, 4

  3. 1, 3, 5

  4. 2, 3, 5
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Beri-beri is caused by thiamine deficiency (2), occurs in populations relying on polished rice (4), and presents with symptoms like neuritis, paralysis, and heart failure (5).

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

Steroid is a/an

  1. Cholesterol

  2. Vitamin

  3. Organic compound

  4. Fatty acid ester
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

Multiple choice biology health and hygiene minerals and vitamins nutrition and diet role of various nutrients

Which of the following is an example of an ester?

  1. Fats

  2. Oils

  3. Starch

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Lipids (fats and oils) are compounds of carbon, hydrogen and oxygen where ratio of hydrogen and oxygen is less than that of the water. Lipids are esters of fatty acids and alcohol which form emulsion with water but are soluble in organic solvents. They are esters of three molecules of fatty acids and one molecule of trihydric alcohol glycerol, e.g., ghee, butter, cholesterol, carotene, eucalyptus oil. 

Multiple choice biology health and hygiene minerals and vitamins nutrition and diet role of various nutrients

A bacterial population contains a mixture of wild type and leucine auxotrophs. From this mixture, the leucine auxotrophs can be enriched by growing the mixture in minimal medium supplemented with 

  1. leucine

  2. penicillin

  3. leucine and penicillin

  4. chloramphenicol
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Penicillin kills actively growing cells by inhibiting cell wall synthesis. Wild type cells grow in minimal medium and are killed by penicillin, whereas leucine auxotrophs cannot grow without leucine and thus remain dormant, surviving penicillin selection.

Multiple choice biology health and hygiene minerals and vitamins nutrition and diet role of various nutrients

Our hair and nails are composed of _________.

  1. Carbohydrates

  2. Proteins

  3. Vitamins

  4. Fat
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Hair and nails are made up of dead squamous cells which are called as keratinocytes. It consists of a protein known as keratin and is present in hair, nails and skin. It helps in protection as composed of intact cells.
So, the correct answer is 'Proteins'.