why do all cells have mitochondria? 1. for photosynthesis; 2. for cellular respiration; 3. all cells do not have them; or 4. to get rid of waste
The correct answer is 2. for cellular respiration.
Mitochondria are considered the powerhouses of the cell as they are responsible for producing energy in the form of ATP through a process called cellular respiration. This process occurs in almost all eukaryotic cells, which include plants, animals, fungi, and protists. Therefore, mitochondria are present in the majority of cells in these organisms.
Option 1, for photosynthesis, is incorrect because photosynthesis occurs in specific organelles called chloroplasts, which are only found in plant cells (and some protists).
Option 3, all cells do not have them, is incorrect because the majority of eukaryotic cells possess mitochondria.
Option 4, to get rid of waste, is incorrect because while mitochondria have a role in eliminating waste produced during cellular respiration, this is not their primary function.