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

The role of Molybdenum is

  1. chromosome contraction

  2. carbon assimilation

  3. nitrogen fixation

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

Molybdenum is a key component of the enzyme nitrogenase, which is responsible for the biological fixation of atmospheric nitrogen into ammonia.

Multiple choice

Most abundant elements in a living cell are

  1. C, O, H, N

  2. C, O, S, P

  3. C, O N, S

  4. C, O, H, P
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbon, oxygen, hydrogen, and nitrogen are the primary building blocks of organic molecules like proteins, carbohydrates, and lipids, making them the most abundant elements in living cells.

Multiple choice

The most common ion in cell is

  1. phosphorus

  2. potassium

  3. iron

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

Potassium (K+) is the most abundant intracellular cation in plant cells and plays a vital role in maintaining osmotic potential and enzyme activation.

Multiple choice

Plastocyanin is a protein containing

  1. Mo

  2. Zn

  3. Fe

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

Plastocyanin is a copper-containing protein that functions as an electron carrier in the photosynthetic electron transport chain.

Multiple choice

The metal ion involved in the stomatal regulation is

  1. iron

  2. magnesium

  3. zinc

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

Potassium ions (K+) are essential for stomatal regulation. The influx and efflux of potassium ions in guard cells change their turgor pressure, leading to the opening and closing of stomata.

Multiple choice

Four important mineral nutrients required in large quantities by humans are

  1. calcium, sulphur, molybdenum and zinc

  2. nitrogen, potassium, manganese and cobalt

  3. phosphorus, calcium, sodium and magnesium

  4. potassium, copper, manganese and calcium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Four important mineral nutrients required in large quantities by humans are phosphorus, calcium, sodium and magnesium.Dietitians may recommend that dietary elements are best supplied by ingesting specific foods rich with the chemical element(s) of interest.

Multiple choice

The essential mineral for the formation of body protein is

  1. sodium

  2. iron

  3. sulphur

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

 The essential mineral for the formation of body protein is sulphur.Sulfur is present in four amino acids: methionine, an essential amino acid; the nonessential cystine and cysteine, which can be made from methionine; and taurine, which is not part of body tissues but does help produce bile acid for digestion

Multiple choice

Which of the following is a function of Mg and Fe in plants?

  1. Energy transfer

  2. Stomatal opening

  3. Synthesis of chlorophyll

  4. Translocation of carbohydrates
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mg and Fe helps in the synthesis of chlorophyll in plants.Chlorophyll is the molecule that absorbs sunlight and uses its energy to synthesise carbohydrates from CO2 and water. This process is known as photosynthesis and is the basis for sustaining the life processes of all plants.