Question

1. Give reasons for the following:
(a) Lysosomes are called suicide bags of the cell.
(b) Cell is known as structural and functional unit of life.
(c) Cells differ in size and shape.
(d) Mitochondria are called the powerhouse of the cell.
(e) Prokaryotes have simpler cell organisation.​

Answer 1

A.For example, when cell gets damaged, lysosome may burst and the enzymes digest their own cell. Therefore lysosomes are known as the Suicidal bags of a cell or we can say that they posses different kind of hydrolases on release of these enzymes that cause death of cell
B. Cell is known as structural and functional unit of life because living organism is the formed of cell and all the physiological, biochemical, genetic and metabolic function take place inside the cell. It is the smallest functional unit which can exist independently.
C. Cells have different shapes because they do different things. ... The shapes of cells have evolved to help them carry out their specific function in the body, so looking at a cell's shape can give clues about what it does
D. Mitochondria are tiny organelles inside cells that are involved in releasing energy from food. This process is known as cellular respiration. It is for this reason that mitochondria are often referred to as the powerhouses of the cell.
E. Prokaryots have simpler cell organisation Because prokaryotes are those organisms Which are having only a single cell . They do not have membrane bound structures. They lack a true nucleus. They lack tissue and organ level organisation.



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