Which of the following is known as Power House of a cell?

  1. Lysosomes
  2. Mitochondria
  3. Ribosomes
  4. None of the above

Answer (Detailed Solution Below)

Option 2 : Mitochondria

Detailed Solution

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The Correct answer is Mitochondria.

Key Points

Mitochondria-
  • It is a double-layered cell organelle, in which the outer layer is porous and the inner layer is folded upon itself is known to be mitochondria.
  • The number of mitochondria in a single cell may be up to 50 to 5000.
  • The inner lumen of mitochondria contains ribosome phosphate particles and DNA molecules.
  • It has the potential to synthesize its own protein and oxidation of carbohydrates and fats are taken place with the help of enzymes in mitochondria.
  • This energy is stored in the form of ATP ( Adenosine Triphosphate ) so, these are known as the "Powerhouse of the cell".
  • The number of mitochondria implant cells is less than that of an animal cell.
  • RBC do not have mitochondria, that's why though these carry oxygen all over the body, but they do not use it for themselves.
  • They are known as the Structural and Functional unit of aerobic respiration.

Important Points

 
Ribosome-
  • Ribosomes are minute particles consisting of RNA and associated proteins that function to synthesize proteins.
  • Proteins are needed for many cellular functions such as repairing damage or directing chemical processes.
  • Ribosomes can be found floating within the cytoplasm or attached to the endoplasmic reticulum.
  • Ribosomes are specialized cell organelles and found in both prokaryotic and eukaryotic cells.
  • Every living cell requires ribosomes for the production of proteins.
  • This cell organelle also functions by binding to a messenger ribonucleic acid (mRNA) and decoding the information carried by the nucleotide sequence of the mRNA.
  • The transfer RNAs (tRNAs) comprising amino acids, enter into the ribosome at the acceptor site.
  • Once it gets bind up, it adds amino acid to the growing protein chain on tRNA.
 
Lysosome-
  • Lysosomes are an important cell organelle found within eukaryotic animal cells. Due to their peculiar function, they are also known as the “suicide bags” of the cell.
  • Lysosomes work as the waste discarding structures of the cell by processing undesirable materials and degrading them, both from the exterior of the cell and waste constituents inside the cell.
  • But sometimes, the digestive enzymes may end up damaging the lysosomes themselves, and this can cause the cell to die. This is termed as autolysis, where “auto” means “self” and “lysis” means “the disintegration of the cell by the destruction of its cell membrane“

mitochondria

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