I. Regulation of metabolic activities

II. Activation of certain enzymes

III. Involved in normal functioning of the cell wall and required for the formation of mitotic spindle.

Which of the following ion is best suitable for it?

1. Ca++

2. K+

3. Zn++

4. Cl-

1. Absorbed as Mg++

2. Activates the enzymes of respiration, photosynthesis

3. Involved in the synthesis of DNA and RNA

4. Involved in the formation of spindle formation

1. Sulphate

2. S₈

3. S₄

4. SO₂

1. Thiamine

2. Biotin

3. Coenzyme A

4. Ascorbic Acid

1. Ferric ions

2. Ferrous ions

3. FeO

4. Both B and C

1. Ferredoxin

2. Cytochromes

3. methionine

4. cystine

1. absorbed in the form of ferric ions

2. It activates Catalase enzyme

3. It is essential for the formation of chlorophyll

4. It is not a part of protein.

1. Mn⁺

2. Mn⁺⁺

3. Mn⁺⁺⁺

4. MnO

1. Zn++

2. Cl-

3. Ca++

4. Mn+

1. Cupric form

2. Cuprous form

3. CuO

4. Cu