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

Micronutrients are

  1. as important as macronutrients, but are required in small amounts

  2. less important than macronutrients

  3. called micronutrients as they play a minor role in plant nutrition

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

Micronutrients are chemical elements or substances required in trace amounts for the normal growth and development of living organisms.

Multiple choice

Which of the following metal ions is involved in stomata regulation?

  1. Iron ion

  2. Potassium ion

  3. Zinc ion

  4. Magnesium ion

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

Opening and closure of the stomatal pore is mediated by changes in the turgor pressure of the two guard cells. The turgor pressure of guard cells is controlled by movements of large quantities of potassium ions and sugars into and out of the guard cells.

Multiple choice

Cu is present in which of the following?

  1. Plasmalemma

  2. Plastoquinone

  3. Plastocyanin

  4. Ferridoxin

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

Plastocyanin is a copper-containing protein that plays a role in the electron transport process that is associated with photosynthesis. It serves as an electron transfer agent between the cytochrome complex which follows photosystem II and the entry point to photosystem I of the non-cyclic electron transfer process.

Multiple choice

Haemoglobin contains

  1. Fe2+

  2. Na+

  3. Mg2+

  4. Ca2+

  5. -
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

It is a red protein that is responsible for transporting oxygen in the blood of vertebrates. Its molecule comprises four subunits, each containing an iron atom bound to a haem group.