Question
GeneralGeneralGeneral

what is cell

Verified Answer

A cell is the basic structural and functional unit of life. All living organisms are made up of cells, and every life process takes place inside cells. Cells are so small that most can only be seen under a microscope.

Cells perform essential functions such as:

  • Respiration

  • Nutrition

  • Growth

  • Reproduction

  • Excretion

Cells were first discovered by Robert Hooke in 1665 while observing cork under a microscope.

There are two main types of cells:

  • Prokaryotic cells

  • Eukaryotic cells

Examples:

  • Bacteria are made of a single cell

  • Humans are made of billions of cells

A typical cell contains:

  • Cell membrane

  • Cytoplasm

  • Nucleus

In conclusion, the cell is called the “basic unit of life” because it carries out all vital activities necessary for the survival of organisms.