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 biology mineral nutrition in plants nutrients and nutrition essential and non-essential mineral elements transport in the xylem of plants

Micronutrients are present in plant tissues in concentrations less than _______ of dry matter.

  1. 1 m mole $Kg^{-1}$
  2. 10 m mole $Kg^{-1}$
  3. 0.1 m mole $Kg^{-1}$
  4. 2 m mole $Kg^{-1}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Micronutrients are defined as essential elements required in small quantities, specifically less than 10 millimoles per kilogram of dry matter.

Multiple choice evs the muscular system and digestive system in human beings human muscular system closer look into muscular system muscles and its types

Which of the following ions are necessary in the chemical events of the muscle contraction?

  1. Sodium and Potassium

  2. Sodium and Magnesium

  3. Calcium and Magnesium

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

For contraction of muscles, a stimulus is required 

Impulse is generated when an action potential is initiated, the muscles then shortens in length and trigger sarcoplasmic reticulum to release calcium ions into the interior of muscle and they bind to troponin, thus causing tropomyosin shift from the face of actin filaments to which myosin head need to bind to produce contraction. Thus, Calcium plays important role in muscle contraction Magnesium plays important role in muscle regulation.
So, the correct answer is 'Calcium and Magnesium'

Multiple choice biology structural organization in living organisms structure of a plant cell levels of organisation in plants plant and animal cell

Most abundant element in plant body is 

  1. Potassium

  2. Nitrogen

  3. Carbon

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

A most abundant compound in living organisms protoplasm is water. Plants contain even more water than animals do- most of them are anywhere from 90 to 95% water. In plants, about 85% of the fresh weight of leaves can be water. Each water molecule is made up of two hydrogen and one oxygen atom. Hence, hydrogen is the most abundant element in a plant body.

Multiple choice biology skeleton, joints and muscles skeleton our skeletal system and the skin skeleton - movement and locomotion

Besides calcium phosphate, the bones contain

  1. Calcium chloride

  2. Magnesium carbonate

  3. Sodium chloride

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

The salts of magnesium and calcium forms an integral part of the skeletal system. Magnesium combines with phosphates, to form magnesium phosphate which contributes to the bone density. It forms major part of dry matter of bones. Osteoporosis is caused, due to the decrease in the density of calcium and magnesium salts in the body. It also helps in muscle contraction. 60% of the total magnesium are present in the bones.
So, the correct option is D.

Multiple choice biology excretion to maintain homeostasis kidney dialysis kidney disorders disorders of kidney

Most common kidney stones are made up of

  1. Magnesium phosphate

  2. Calcium oxalate

  3. Uric acid

  4. Cholesterol
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
There are four main types of kidney stones. Calcium stones are the most common type of kidney stones. They are usually made of calcium and oxalate (a natural chemical found in most foods) but are sometimes made of calcium and phosphate. Uric acid stones form when urine is often too acidic.
So, the correct option is 'Calcium oxalate'.
Multiple choice chemistry water and air and their importance natural cycles and resources constituents of air component of air - nitrogen

The three elements most usually contained in fertilizers are:

  1. Potassium, phosphorus and carbon

  2. Sodium, nitrogen and phosphorus

  3. Silica, nitrogen and phosphorus

  4. Potassium, phosphorus and nitrogen
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fertilizers are composed of three macronutrients, $NPK$ nitrogen, phosphorous and potassium.

Nitrogen ($N$): Leaf growth;
Phosphorus ($P$): Development of roots, flowers, seeds, fruit;
Potassium ($K$): Strong stem growth, movement of water in plants, promotion of flowering and fruiting;

Multiple choice biology mineral nutrition in plants hydroponics nutrients and nutrition hydroculture

Which one of the following roles is not charcteristic of an essential element?

  1. Being a component of biomolecules

  2. Changing the chemistry of soil

  3. Being a structural component of energy related chemical compounds.

  4. Activation or inhibition of enzymes.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A dirt's fruitfulness, which is a substantial property, is simpler to change than the dirt's physical properties. A natural issue, the dirt minerals present, and the seepage conditions all impact soil shading. 

So, the correct option is 'Changing the chemistry of soil'.

Multiple choice biology mineral nutrition in plants hydroponics nutrients and nutrition hydroculture

Match the following essential elements(List I) with their respective roles(List-II) and select the correct answer.

List-I List-II
a. Chlorine $1$. Constituent of plastocyanin
b. Copper $2$. Constituent of nitrate reeducates
c. Molybdenum $3$. Constituent of alcohol dehydrogenate
d. Zinc $4$. Required for $CO _2$ evolution in photosynthesis
$5$. Required for phosphate transfer
  1. A-$4$, B-$1$, C-$3$, D-$2$
  2. A-$1$, B-$2$, C-$5$, D-$3$
  3. A-$1$, B-$4$, C-$5$, D-$2$
  4. A-$4$, B-$1$, C-$2$, D-$3$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chlorine is required for water splitting (evolution of O2), Copper is a constituent of plastocyanin, Molybdenum is a constituent of nitrate reductase, and Zinc is a constituent of alcohol dehydrogenase.

Multiple choice chemistry the periodic table dobereiner's triads development of the modern periodic table into the history

If the two members of a Dobereiner triad are phosphorus and antimony, the third member of this triad is :

  1. arsenic

  2. sulphur

  3. iodine

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

According to Dobereiner, the atomic mass of the middle element was nearly equal to the arithmetic mean of the other two. Therefore, the atomic mass of the third element is $=$ $\frac{{31}+{121.75}}{2}$ $=$ 76.37 which is nearly equal to the atomic mass of arsenic.

Multiple choice evs seeds and seeds plant adaptation and modification leaves leaf modification

Insectivorous plants such as Venus fly trap catch and digit insects in order to supplement the deficiency of.

  1. sulphur

  2. nitrogen

  3. potassium

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

Carnivorous plants typically grow in nutrient-poor, boggy soils where nitrogen is scarce. They capture insects to obtain nitrogen for protein synthesis.

Multiple choice biology transport in plant transport of water and minerals conduction of water and minerals absorption of water and minerals in plants

Which of the four most abundant elements in most plants (C, H, O and N), does a terrestrial green plant procure mainly through its roots from the soil?

  1. H and O

  2. H and N

  3. C and O

  4. O and N
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plants obtain Carbon from CO2 in the air, Oxygen from air and water, Hydrogen from water, and Nitrogen from the soil. Therefore, H and N are the elements procured mainly through roots.

Multiple choice biology transport in plant transport of water and minerals conduction of water and minerals absorption of water and minerals in plants

The active uptake of minerals depends upon

  1. Respiration

  2. Transpiration

  3. Photorespiration

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

Plants can absorb minerals that are dissolved in solution.The minerals present in the soil can be absorbed through their root hair cells. However, the concentration of minerals in the soil is very low. While water is absorbed by the plants through osmosis,  minerals are absorbed as ions by active transport (transport against the law of diffusion, by spending cellular energy). The cell membrane has transport proteins that allow the ions to cross the membrane. The ions then move upward through the xylem, to the leaves and other aerial parts of the plant. The absorption of minerals using respiratory energy is called active absorption and is influenced by temperature, oxygen concetration and respiratory poisons

Multiple choice zoology ecosystem : structure and function biogeochemical cycles - sedimentary biogeochemical cycle nitrogen and phosphorus cycles

Crystalline rocks are natural source of biogenetic element

  1. Calcium

  2. Phosphorus

  3. Magnesium

  4. Sodium

  5. Sulpher
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Phosphorus is primarily found in the Earth's crust in the form of phosphate rocks, which are crystalline in nature. It is released into the ecosystem through the weathering of these rocks.