141.Which of the following is classified as a conditionally essential nutrient?

a.PABA

b.choline

c.inositol

d.ubiquinone

142.Which of the following substances is probably required in the diet of human beings?

a.choline

b.inositol

c.lipoic acid

d.pangamic acid

143.Which of the following has been mistaken to be an essential nutrient for human beings?

a.cobalamin

b.ubiquinone

c.pyridoxine

d.pantothenic acid

144.Which of the following body parts is frequently affected by deficiencies of the B vitamins?

a.bones

b.tongue

c.liver

d.hair and nails

145.Which of the following is an overt sign of a possible B vitamin deficiency?

a.anemia

b.smooth tongue

c.abnormal liver function

d.abnormal heart function

146.Sulphur is present in practically all of which of the following compounds?

a.vitamins

b.proteins

c.fatty acids

d.carbohydrates

147.Some amino acids can link to each other by bridges made of which mineral?

a.sulphur

b.calcium

c.chloride

d.magnesium

148.What is the major source of dietary sulphur?

a.fats

b.protein

c.mineral salts

d.carbohydrates

149.Which one of the following body components is known to have a high sulphur content?

a.skin

b.eyes

c.teeth

d.bones

150.A deficiency of which of the following minerals is the primary cause of goitre?

a.iron

b.zinc

c.iodine

d.selenium