1. Tardigrade
  2. Question
  3. Biology
  4. Study the following statements regarding mitochondria and select the incorrect ones. (i) The matrix contains single circular ssDNA molecule, a few RNA molecules, 70s ribosomes (ii) Mitochondria divide by fission (iii) Mitochondria bear cisternae (iv) These are the sites of aerobic respiration

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Q. Study the following statements regarding mitochondria and select the incorrect ones.
(i) The matrix contains single circular ssDNA molecule, a few RNA molecules, 70s ribosomes
(ii) Mitochondria divide by fission
(iii) Mitochondria bear cisternae
(iv) These are the sites of aerobic respiration

NTA AbhyasNTA Abhyas 2020Cell : The Unit of Life

Solution:

Mitochondria is an important organelle in the eukaryotic cell as it the centre for conducting aerobic respiration. It is semi autonomous having its own circular dsDNA with ribosome and RNA molecule for protein synthesis. The inner membrane of mitochondria is internally looped to form cristae. The mitochondria can replicate itself and increase the copies via fission process similar to the prokaryotic one.