Haploid Cells are produced by meiosis
O2 is just elemental oxygen. It's a pure substance, but not necessarily because it only contains oxygen atoms, it's because there's only oxygen molecules present.
Selectively permeable means that it allows only the nutrients it needs but keeps out the bad things out. For example, some windows have the netting to keep out the bugs from going into your house. That is selectively permeable.
Answer:
The correct answer is - they convert the energy stored in organic compounds.
Explanation:
Mitochondria is a very important cell organelle in eukaryotes as it produces energy and therefore, known as the energy center of the cell. Mitochondria produces the energy with the help of the process known as cellular respiration.
Cellular respiration takes place inside the mitochondria in order to convert organic compounds in the carbon dioxide and water and release a high amount of energy.