Cristae is found in

The correct answer is Mitochondria

Concept:

• Mitochondria are the sites of aerobic respiration.
• The mitochondria are known as the "powerhouses of the cell" because they are responsible for producing energy in the form of ATP (adenosine triphosphate) through the process of cellular respiration.
• Within the mitochondria, the inner membrane is folded into structures called cristae. These folds increase the surface area for biochemical reactions involved in energy production.
• Cristae play a vital role in the electron transport chain and ATP synthesis, which are crucial steps in aerobic respiration.
• The number of mitochondria in a single cell may be up to 50 to 5000.
• The inner lumen of mitochondria contains ribosome phosphate particles and DNA molecules.
• It has the potential to synthesize its own protein and oxidation of carbohydrates and fats are taken place with the help of enzymes in mitochondria.

Other Options:

• Chloroplast: Chloroplasts are the site of photosynthesis in plant cells and do not contain cristae. Instead, they have thylakoid membranes, where the light-dependent reactions of photosynthesis occur.
• Nucleus: The nucleus is the control center of the cell, housing the genetic material (DNA). It is surrounded by a nuclear envelope with nuclear pores for communication and transport.
• Cell Wall: The cell wall is a rigid structure found in plant cells, fungi, and some prokaryotes. It provides structural support and protection.