Which of the following is the part of proteins, hormones, chlorophyll, vitamins and enzymes?
a) Sulphur
b) Sodium
c) Nitrogen
d) Potassium
Which of the following is the part of proteins, vitamins and enzymes?
a) Sulphur
b) Sodium
c) Iron
d) Potassium
Which of the following activates enzymes, a structural component of cell walls and regulates water movements in cells?
a) Sulphur
b) Sodium
c) Nitrogen
d) Calcium
Which of the following is the part of chlorophyll and activates many enzymes?
a) Sulphur
b) Magnesium
c) Cadmium
d) Phosphorus
Which of the following is necessary for photosynthesis and activates many enzymes?
a) Iron
b) Sodium
c) Nitrogen
d) Calcium
Which of the following is part of the enzyme that reduces nitrates to ammonia and important in making amino acids?
a) Boron
b) Copper
c) Molybdenum
d) Calcium
