Question

what is the basic unit of living things what is it made up of

Answer 1

Dear student,

The basic unit of living thing is the cell.

Cell is made up of the cell membrane and enclose a matrix called as cytoplasm which hold different cell organelles such as mitochondria, nucleus, endoplasmic reticulum, golgi apparatus, etc.

A group of similar types of cells form a tissue.
Different types of tissue (cardiac muscle tissue) comprise an organ (e.g. Heart) and different organs form an organ system (circulatory system).
All the organ system together forms an organism.

Regards