Biology

Minerals and Nutrients

936 Questions

Review essential biology concepts regarding minerals and nutrients in this question bank. It covers trace elements required by plants and minerals crucial for human blood and bone formation. These facts frequently appear in general science exams.

Essential plant micronutrientsChlorophyll synthesis elementsHuman blood and bone mineralsTrace elements in physiology

Minerals and Nutrients Questions

Multiple choice

For chlorophyll formation, which two elements are needed?

  1. Iron and calcium

  2. Calcium and magnesium

  3. Nitrogen and magnesium

  4. Sodium and chloride
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Magnesium is the central atom of the chlorophyll molecule, while nitrogen is a key component of the porphyrin ring structure. Both are essential for the synthesis of chlorophyll.

Multiple choice

Calcium content is found maximum in

  1. wheat

  2. maize

  3. barley

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

Maize is generally considered a better source of certain minerals compared to common grains like wheat or barley, though this is a relative comparison in nutritional contexts.

Multiple choice

What is the main component of bones and teeth?

  1. Calcium phosphate

  2. Calcium carbonate

  3. Calcium nitrate

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

The majority of phosphorus found in the body is bound up with calcium in the bones as calcium phosphate, accounting for around 80% of the bodily total. The main component of bones and teeth is Calcium phosphate.

Multiple choice

The main constituent of haemoglobin is

  1. Calcium

  2. Chlorine

  3. Iron

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

Iron has long been known to be important for red blood cell function because of its fundmanetal role in the haemoglobin molecule. Haemoglobin is the molecule that carries oxygen to the tissues from the lungs and returns with carbon dioxide from the cells. It is closely related to myoglobin, which is responsible for energy production in the muscles.

Multiple choice

Which of the following minerals are incorrectly matched with their functions?

  1. Calcium and Phosphorous----Building bones and teeth

  2. Iodine----Prepares thyroid hormone

  3. Sodium and Potassium------Help in growth of the body

  4. Zinc----Metabolism of food
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

No, sodium and potassium help in maintaining the fluid balance where as proteins are responsible for growth of the body.

Multiple choice

Magnesium is essential for

  1. making bones and teeth

  2. normal functioning of thyroid gland

  3. maintaining movement of body fluids

  4. muscle contraction
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The correct answer is option (4).