Mitochondria have two membranes, one on the outside and one on the inside.
Each membrane has its own shape and function.
The organelle’s form is controlled by the outer membrane, which is also required for mitochondrial contact with other organelles.
The inner mitochondrial membrane is divided into two sections: 1) the inner border membrane, which is located next to the outer membrane, and 2) the folded cristae, which have protrusions and folds that pierce the inner mitochondrial matrix.
Cristae are sub-compartments of mitochondria’s inner membrane that are required for mitochondrial function.
Mitochondria are commonly referred to as the cell’s powerhouses since they are the organelles responsible for the production of ATP, the cell’s energy currency.
Final Answer:
Cristae are folds found in a mitochondria’s inner membrane. It’s what gives the inner membrane its wrinkled appearance. It has a vast surface area on which numerous reactions can occur.