2-it is called the powerhouse of the cell because it is where respiration occurs and it is the part of the cell that makes energy fro the whole cell 

3-it helps because it creates more surface area 

2) Mitochondria are known as the powerhouses of the cell. They are organelles that act like a digestive system which takes in nutrients, breaks them down, and creates energy rich molecules for the cell. The biochemical processes of the cell are known as cellular respiration.
3) The outer membrane covers the organelle and contains it like a skin. The inner membrane folds over many times and creates layered structures called cristae. The fluid contained in the mitochondria is called the matrix. The folding of the inner membrane increases the surface area inside the organelle.

2)They are involved in the cellular respiration. They releases energy from food. They generate energy rich molecules, ATP from cellular respiration which is later used for other process. Hence, mitochondria are called as the powerhouses of the cell

3)The inner membrane is wrinkled with lots of folds and performs a number of functions to help make energy

2) Mitochondria are known as the powerhouses of the cell. They are organelles that act like a digestive system which takes in nutrients, breaks them down, and creates energy rich molecules for the cell. The biochemical processes of the cell are known as cellular respiration.
3) The outer membrane covers the organelle and contains it like a skin. The inner membrane folds over many times and creates layered structures called cristae. The fluid contained in the mitochondria is called the matrix. The folding of the inner membrane increases the surface area inside the organelle.

Mitochondria are very small organelles. They have two membranes. The outer membrane surrounds the organelle. The inner membrane is highly folded. These foldings stick out into the middle of the mitochondria and are called cristae. Respiration happens on the inner membrane. The folds increase the surface area so that more respiration can take place.  

The inside of the mitcohondrion is called the matrix. It contains special proteins called enzymes. 

These speed up the respiration reaction and without them respiration would not happen. 

Mitochondria can increase in number if more energy is needed in a cell. They relocate to increase the amount of respiration that can take place.  cells that are involved in releasing energy from food. This process is known as cellular respiration. It is for this reason that mitochondria are often referred to as the powerhouses of the cell.

Mitochondria are found in all body cells, with the exception of a few. There are usually multiple mitochondria found in one cell, depending upon the function of that type of cell. Mitochondria are located in the cytoplasm of cells along with other organelles of the cells.

2.Explain how mitochondria are called power house?
Mitochondria (sing. Mitochondrion) are known as the powerhouse of the cell because they are responsible for the release of energy from food ,i.e, cellular respiration. This energy is released in the form of ATP (adenosine triphosphate), the energy currency of the cell.

3. Explain how folding of the inner membrane helps mitochondria to produce more energy.
Mitochondrion Structure

The inner membrane is wrinkled with lots of folds and performs a number of functions to help make energy. Cristae - The folds on the inner membrane are called cristae. Having all these folds helps to increase the surface area of the inner membrane.