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CBSE Class 9 Answered

Brifely define the CELL : basic unit of life and their components, oragenells ,their funtion
Asked by gspublicschool | 10 Oct, 2018, 07:20: AM
answered-by-expert Expert Answer

The cell is the basic structural and functional unit of life. The membrane-bound living structures of a cell which are specialized to perform specific functions inside a cell are called cell organelles.

The different types of cell organelles are nucleus, endoplasmic reticulum, mitochondria, Golgi apparatus, ribosomes, lysosomes, centrosomes (in animal cell only) and plastids (in plant cell only).

Cell organelles

Function

Nucleus
  • Regulates cell functions
  • Contains chromosomes, made of genes, which control hereditary characteristics

Mitochondria
  • Produces ATP which acts as energy currency for the cell

Endoplasmic reticulum
  • Folding of proteins
  • Transport of synthesised proteins

Golgi apparatus
  • Modification and export of proteins

Vacuoles
  • Store water and other substances, food, pigments and waste products
  • Provides turgidity to the cells

Lysosomes
  • Digest and remove wastes from the cell

Ribosomes
  • Synthesise proteins

Plastids (only in plant cells)
  • Site for manufacture and storage of important chemical compounds used by the cell
Answered by Sheetal Kolte | 10 Oct, 2018, 11:59: AM

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