Cristae

Definition

Cristae are the folds of the inner membrane of mitochondria. They increase the surface area for biochemical reactions, such as cellular respiration, to occur more efficiently.

5 Must Know Facts For Your Next Test

1. Cristae are essential for ATP production because they house the proteins involved in the electron transport chain.
2. The increased surface area provided by cristae allows for a greater number of ATP synthase enzymes to be present.
3. Cristae play a crucial role in energy metabolism within eukaryotic cells.
4. The structure of cristae can vary between different types of cells depending on their metabolic activity.
5. Cristae are dynamic structures that can change shape and size depending on the cell's energy demands.

Review Questions

• What is the primary function of cristae in mitochondria?
• How do cristae contribute to ATP production?
• Why is an increased surface area important for the function of cristae?

Related terms

Mitochondria: Organelles known as the powerhouse of the cell, where cellular respiration occurs.

ATP Synthase: An enzyme located in the inner mitochondrial membrane involved in synthesizing ATP.

Electron Transport Chain: A series of protein complexes located in the inner mitochondrial membrane that drive ATP production through oxidative phosphorylation.