Biology

Minerals and Nutrients

849 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 botany mineral nutrition in plants deficiency diseases and symptoms deficiency symptoms macronutrients and micronutrients

Which one of the following statements can best explain the term critical concentration of an essential element? 

  1. Essential element concentration below which plant growth is retarded

  2. Essential element concentration below which plant growth becomes enhanced

  3. Essential element concentration below which plant remains in the vegetative phase

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Critical Concentration is the term which is used to define the concentration of essential elements below which the growth of plant is Retarded or Reduced. Also, if the concentration of essential elements rise above the critical concentrations.  it leads to Toxicity. So, the correct answer is "Essential elements concentration below which plant growth is retarded."
Multiple choice bio-chemistry digestive system of human absorption mechanism absorption digestion

Which of the following mineral is needed for amino acid to pass into the bloodstream?

  1. Potasium

  2. Sodium

  3. Iron

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Amino acids constitute the proteins. They are absorbed in the blood by active transportation using sodium-potassium amino acid transporter. They use ATP in the process and transported from the lumen to the cells against the gradient.
So the correct answer is 'Both A and B'.
Multiple choice chemistry the s-block elements (alkali and alkaline earth metals) biological importance of magnesium and calcium biological importance of elements biological importance of s block elements biological importance of sodium and potassium

Which  of the following statement is false?

  1. $Mg^{2+}$ ion forms a complex with $ATP$
  2. $Ca^{2+}$ ions are important in blood clothing.
  3. $Ca^{2+}$ ions are not important in maintaining the regular beating of the hear
  4. $Mg^{2+}$ ions are important in the green parts of plants
Reveal answer Fill a bubble to check yourself
C Correct answer
Multiple choice chemistry the s-block elements (alkali and alkaline earth metals) biological importance of magnesium and calcium biological importance of elements biological importance of s block elements biological importance of sodium and potassium

Which one of the following has magnesium?

  1. Vitamin $B _{12}$

  2. Chlorophyll

  3. Haemocyanin

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

$Mg$ is present in chlorophyll which is a green pigment and is used in photosynthesis in green plants.

Hence option B is correct.

Multiple choice chemistry the s-block elements (alkali and alkaline earth metals) biological importance of magnesium and calcium biological importance of elements biological importance of s block elements biological importance of sodium and potassium

State True or False.
Magnesium is an essential constituent of chlorophyll, the green colouring matter of plants.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Magnesium is the central metal ion in the porphyrin ring of the chlorophyll molecule, which is essential for photosynthesis.

Multiple choice chemistry the s-block elements (alkali and alkaline earth metals) biological importance of magnesium and calcium biological importance of elements biological importance of s block elements biological importance of sodium and potassium

The metal ions (charged particles) that are required for contraction of muscles in human beings and animals are ions of:

  1. calcium

  2. sodium

  3. potassium

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

$Ca^{2+}$ ions are required for contraction of muscles in humans.

Multiple choice chemistry the s-block elements (alkali and alkaline earth metals) biological importance of magnesium and calcium biological importance of elements biological importance of s block elements biological importance of sodium and potassium

Which of the following metals is required as a cofactor by all enzymes utilizing ATP in phosphate transfer?

  1. K

  2. Ca

  3. Na

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

Mg binds to phosphate group in ATP thus making a complex that catalyses phosphate transfer. 

Multiple choice evs deficiency diseases need for nutrients nutrients needed by the body balanced diet and malnutrition food for health nutrition and its deficiency nutrition and its need

Fertilizers supply this component that is essential for plant growth. Name the component.

  1. Carbon

  2. Calcium

  3. Nitrogen

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

Nitrogen is one such element which is very important in plant growth because it is an essential part of the chlorophyll that is the site of photosynthesis.

Nitrogen is not found in the free state in the soil and the plants cannot take up nitrogen from the air directly so we add fertilizers that are rich in nitrogen and supply the plant with it.
Calcium and potassium are trace elements and are needed in small amounts and can be taken up from the soil. Plants take up carbon directly from the atmosphere.
So, the correct option is 'Nitrogen'

Multiple choice evs deficiency diseases need for nutrients nutrients needed by the body balanced diet and malnutrition food for health nutrition and its deficiency nutrition and its need

One example of a nutrient in its reduced form is

  1. Carbon in $CO _2$
  2. Hydrogen in $H _2O$
  3. Nitrogen in $NH _3$

  4. Sulphur in sulphate
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In NH3 (ammonia), nitrogen is in the -3 oxidation state, which is its most reduced form. In CO2, carbon is in the +4 state (oxidized); in H2O, hydrogen is in the +1 state; in sulphate, sulphur is in the +6 state.

Multiple choice evs deficiency diseases need for nutrients nutrients needed by the body balanced diet and malnutrition food for health nutrition and its deficiency nutrition and its need
Many elements are found in living organisms either free or in the form of compounds. Which one of the following is not found in living organisms?

  1. Silicon

  2. Magnesium

  3. Iron

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

A comparison of elements present in non-living and living matter is given in the table below:

 Elements  $\%$ weight of    $\%$ weight of 
   Earth crust (non living matter)  Human body (living matter)
Hydrogen   0.14  0.5 
Carbon   0.03  18.5 
Oxygen   46.6  65.0 
Nitrogen   very little  3.3 
Sulphur  0.3 0.3 
Sodium   2.8  0.2
Calcium  3.6   1.5
Magnesium  2.1  0.1 
Silicon  27.7  negligible