what type of cells would have more mitochondria than others

Cells with the highest energy demands—like cardiac muscle cells (heart cells) and active skeletal muscle cells (especially slow-twitch fibers)—tend to have more mitochondria than other cell types.

High-mitochondria cell types

• Cardiac muscle cells (cardiomyocytes) beat continuously and can have mitochondria filling around 30–40% of the cell volume to keep up with constant ATP demand.

• Slow-twitch skeletal muscle fibers (used for posture and endurance activities like walking or distance running) are packed with mitochondria for sustained aerobic respiration.

• Some highly active secretory or transport cells (for example, certain kidney tubule cells and liver cells) also have many mitochondria to power active transport and metabolism.

Why these cells need more mitochondria

• Mitochondria act as the main powerhouse of the cell, producing ATP via aerobic respiration. Cells that are constantly active or contracting need more ATP per second.

• The heart never stops beating, and endurance muscle fibers may work for long periods without rest; extra mitochondria allow them to keep going without fatiguing quickly.

Cells with fewer mitochondria

• Cells with lower energy needs, such as many resting connective tissue cells or some immune cells, have fewer mitochondria per cell.

• Red blood cells in humans have no mitochondria at all, relying instead on anaerobic pathways for their limited energy needs.

Easy way to remember it

• More constant work or movement = more mitochondria (heart, endurance muscles).

• Less activity or simpler jobs = fewer mitochondria (some immune, connective, and mature red blood cells).

Information gathered from public forums or data available on the internet and portrayed here.