Which of the following is not a character of mitochondria?
Correct answer: D. The number of mitochondria is constant
- A. It contains F1 particles
- B. It is double membranous
- C. It is a self-replicating organelle
- D. The number of mitochondria is constant
Explanation
The correct answer is that the number of mitochondria is not constant. Different cell types and different conditions can lead to changes in the number of mitochondria within a cell. For example, muscle cells may have more mitochondria due to higher energy demands. The other options describe true characteristics of mitochondria: they contain F1 particles for ATP production, they have a double membrane structure essential for their function, and they are capable of self-replication due to their own DNA.
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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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