Select the alternative giving correct identification and function of the organelle 'A' in the diagram.
Correct answer: A. Mitochondria - Produce cellular energy in the form of ATP
- A. Mitochondria - Produce cellular energy in the form of ATP
- B. Golgi body - Provides packaging material
- C. Lysosomes - Secrete hydrolytic enzymes
- D. Endoplasmic reticulum- Synthesis of lipids
Explanation
Mitochondria are miniature biochemical factories where food stuffs or respiratory substrates are completely oxidised to carbon dioxide and water. The energy liberated in the process is initially stored in the form of reduced coenzymes and reduced prosthetic groups. The latter soon undergo oxidation and form energy rich ATP. ATP comes out of mitochondria and helps perform various energy requiring processes of the cell like muscle contraction, nerve impulse conduction, biosynthesis, membrane transport, cell division, movement, etc. Because of the formation of ATP, the mitochondria are called power houses of the cell.
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About Cell Structure and Function
Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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