Read the following four statements (A­D). (A) Colostrum is recommended for the newborn because it is rich in antigens. (B) Chikungunya is caused by a Gram-negative bacterium. (C) Tissue culture has proved useful in obtaining virus-­free plants. (D) Beer is manufactured by distillation of fermented grape juice. How many of the above statements are wrong?

Explanation

Chikungunya is caused by the Chikungunya virus. Colostrum is the first breast milk of a mother which contains antibodies (especially IgA) that protect the infant by the age of three months. Beer is manufactured by fermentation of barley malt by yeast species. Colostrum is a milky fluid that comes from the breasts of mammals the first few days after giving birth before true milk comes and is rich in proteins, carbohydrates, fats, vitamins, minerals, and antibodies (not antigens).