Tag: minerals and vitamins

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Questions Related to minerals and vitamins

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

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'.
Multiple choice biology nutrition minerals and vitamins nutrition and diet role of various nutrients

When breast feeding is replaced by less nutritive food low in proteins and calories ; the infants below the age of one year are likely to suffer from

  1. Marasmus

  2. Rickets

  3. KwashiorKor

  4. Pellagra
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Marasmus is a form of severe malnutrition caused by a deficiency of both proteins and calories, typically seen in infants when breastfeeding is stopped early.

Multiple choice biology digestion and absorption minerals and vitamins nutrition and diet role of various nutrients

Which of the following statement is incorrect related to digestion?

  1. Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules.

  2. It is a anabolic process.

  3. Digestion is both voluntary and involuntary process.

  4. None of these.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A) Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules.

B) It is a catabolic process as it breaks down the molecule into a simple form.
C) It is voluntary until swallowing as food is swallowed the whole process becomes involuntary.

So the correct option is '(B) It is an anabolic process.
                                         

Multiple choice biology digestion and absorption minerals and vitamins nutrition and diet role of various nutrients

The final products of digestion should be

  1. Fat soluble and should be able to pass through cell walls.

  2. Water soluble and should be able to pass through cell walls.

  3. Fat soluble and should be able to pass through cell membranes.

  4. Water soluble and should be able to pass through cell membranes.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  •  Digestion is catabolic process in the digestive tract where ingested food is converted into simpler, soluble and diffusible substances that can be assimilated by the body and absorbed into the blood from the intestinal walls.
  • The end product should be water soluble as it has to combine with the plasma of blood.
  • Absorption at intestinal walls is through cell membranes of intestinal cells and walls of blood capillaries.
  • So, the correct answer is 'Water soluble and should be able to pass through cell membranes'.
Multiple choice bio-chemistry minerals minerals and vitamins nutrition and diet role of various nutrients

Which one is wrong combination?

  1. $N _2$-Amino acid

  2. Fe-cytochrome

  3. Na-Protein

  4. Mg-Chlorophyll

  5. P-DNA
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Na- Protein is wrong combination as Nitrogen (N) is needed for the protein formation. Nitrogen is the main constituent of the amino acid that helps in the formation of protein

Thus, the correct answer is option C.

Multiple choice bio-chemistry minerals minerals and vitamins nutrition and diet role of various nutrients

Which of the group of elements is not essential for a normal plant?

  1. K, Ca, Mg

  2. Fe, Zn, Mn, B

  3. Pb, I, Na

  4. Mg, Fe, Mo
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The plant ash reveals the presence of 40 elements but all are not essential for plant nutrition, only a few are essential for growth and development of plants. These are called as the essential elements. The essential elements may be grouped as major elements or macronutrients and trace elements or micronutrients, based on their requirement by plants. 

Major elements or macronutrients are required in large amounts and form the plant constituents. These include carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium, magnesium and sulphur. These elements form an integral part of complex organic molecules. Some of these elements help in the functioning of enzyme systems. The sources of macronutrients are generally the soil or the atmosphere. 
Trace elements or micronutrients are elements, like iron, boron, manganese, copper, zinc and molybdenum. They are required for plants only in very small amounts but these are indispensable for the normal growth and development of plants. 
Lead, Iodine and sodium are generally not required by plants and are non essential elements for plant mineral nutrition.