Question

1. Why plasma membrane called selectively permeable membrane? 2. Why lysosome called suicidal bag?

Answer 1

1)because it allows selected useful or necessary materials to move in and out of the cell.

2)because it contains powerful digestive enzymes that are capable of breaking down all oraganic materials and also it cleans worn out cell organelles or other foreign materials by digesting them even it also can digests iits own cell in which it is emmbedded

Answer 2

1) Plasma membrane are called semipermeable membrane because it allow movement of few selected substances only through it.

2) Lysosome are called sucide bags becuse they destroy even themselves to destroy the any damage in cell