what is cell........
.
.
Answers
Explanation:
the smallest structural and functional unit of an organism, which is typically microscopic and consists of cytoplasm and a nucleus enclosed in a membrane.
Answer:
The unit of life
Explanation:
Cell:
The cell is the fundamental structural and functional unit of all living beings. It is the smallest part of the body of an organism which is capable of independent existence and of performing the essential functions of life.
Every organ in our body - the skin, the brain ,the muscle or even the bone is composed of hundreds of thousands of such cells. Similarily, every part of a plant that is the leaf , the flower, the root and even the wood is composed of an exceeding large number of cells.
Every cell has its own life. Old and weak cells in the body continuously die and are replaced by new cells. Red blood cells for instance die after about 120 days. All organisms including ourselves, start life as a single cell called the zygote.
Cells are so small that they cannot be seen with the naked eye. It was, therefore, natural that their existence could not be deducted by man until he invented magnifying aids in the form of microscopes.