Biology · Cell Structure and Function
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Mitochondria can be found in:
- A
Virus
- B
Bacteria
- C
Protozoans
- D
Nostoc
- E
None of the above
Protozoans, classified as eukaryotic organisms, possess a nucleus and various organelles, including mitochondria, making them capable of complex cellular processes. In contrast, viruses, bacteria, and cyanobacteria like Nostoc are all lacking in mitochondria. Viruses depend on host cells, bacteria are prokaryotic, and Nostoc, though photosynthetic, is similar to bacteria in lacking membrane-bound organelles. Hence, only option C is correct.
Viruses lack cellular structures such as mitochondria. They rely completely on host cells for their energy and reproduction needs.
Most bacteria are prokaryotic and do not contain membrane-bound organelles like mitochondria. Their cellular processes occur in the cytoplasm.
Protozoans are eukaryotic organisms with complex cellular structures, including mitochondria, which are essential for energy production.
Nostoc is a genus of cyanobacteria, which are prokaryotic organisms. They lack membrane-bound organelles such as mitochondria.
This option is incorrect because protozoans, which are eukaryotic, contain mitochondria.
Tagged under Biology · Cell Structure and Function · 2006