In which type of cell would it be most likely to find a relatively large number of mitochondria

Mitochondria are often referred to as the "powerhouses" of the cell because they generate most of the cell's supply of adenosine triphosphate (ATP), used as a source of chemical energy. Therefore, you would most likely find a relatively large number of mitochondria in cells that require a lot of energy.

For example, muscle cells, particularly those in the heart, require a lot of energy to continually contract and relax, so they would have a large number of mitochondria. Similarly, liver cells, which perform a variety of metabolic processes, would also have a large number of mitochondria.

In contrast, red blood cells, which do not consume energy for metabolic processes, do not contain any mitochondria.

So, in summary, the type of cell that would most likely contain a relatively large number of mitochondria would be cells that require a lot of energy, such as muscle cells and liver cells.