Question

Cristae are associated with which of the following?
A. Cytoplasm
B. Protoplasm
C. Mitochondria
D. Ribosome

Answer 1

Cristae are the finger-like projections which are associated with sites for synthesis of ATP in the body of an organism. ATP stands for adenosine triphosphate and is required for performing certain activity by each cell of the body.

Complete step by step answer:
In the body of an organism each activity requires the consumption of energy which is generated in the form of ATP by the metabolic pathways such as glycolysis, oxidative phosphorylation and krebs cycle.
We know that mitochondria is known as a powerhouse of cells which generates ATP and is utilized by the cell in repair or synthesis process.
We will now discuss about the structure of mitochondria and about the site where ATP synthesis takes place:
Mitochondria is disc shaped organelle and has compact structure which helps it to increase its productivity. The structure of mitochondria consist of two membranes.
-The outer membrane and the inner membrane.
-The outer membrane function of containing and covering the organelles and the inner membrane created a layered structure by folding over a number of times called cristae.
The space between both the layers is known as inter membrane space and the area under the inner membrane is known as matrix where proteins, dna, and the ribosomes are present and the certain reactions take place.
So, the correct answer is “Option C”.

Note: The layered structure of the inner membrane increases the surface area of the matrix, proving a large area for reactions to occur in such a compact organelle. Cristae contain chambered for ATP synthesis enzymes such as ${F_1}{F_o} - ATP$ synthase and other respiratory chain complexes.