Questions

•Lysosomes are spherical membranous sacs of enzymes.

•The lysosome membrane helps to keep its internal compartment acidic and separates the digestive enzymes from the rest of the cell.

•Lysosomes are formed by budding from the Golgi complex.

The life-cycle theory of consumption, popularly known as life-cycle hypothesis,' was developed by Ando and Modigliani" in the early 1960s.

The life-cycle hypothesis postulates that individual consumption in any time period depends on

(i) resources available to the individual,

(ii) the rate of return on his capital, and

(iii) the age of the individual.

The resources available to an individual consist of his existing net wealth and the present value of all his current and future labour incomes. According to the life-cycle hypothesis, a rational consumer plans consumption on the basis of all his resources and allocates his income to consumption over time so that he maximizes his total utility over his life time.