Question

Which of the following statements is true for mitochondria?
A. It can change in shape and size and division also occurs.
B. Does not change shape but division occurs.
C. Does not change shape and size and division does not occur.
D. It can change shape but division does not occur.

Answer 1

Hint: Mitochondria is also known as the powerhouse of the cell and is a membrane bound organelle which is present in the cytoplasm of all eukaryotic cells and it produces ATP molecules.

Complete Answer:
Let us first know more about mitochondria before we find the correct answer. It is a double membrane bound cell organelle and it is found inside the cytoplasm and functions as the cell's ‘digestive system.’
The structure of mitochondria is as follows,
- It ranges from 0.5 to 1.0 in micrometer.
- The structure comprises an outer and inner membrane separated by gel-like material called matrix.
- The outer and inner membrane is made up of phospholipid layers and proteins.
- It is permeable to ions, energy molecules like ATP and ADP.

Mitochondria are present in variable sizes and shapes in different organisms. The shape of mitochondria varies in various living organisms from tubular networks to stacks cisternae structure. It also has the capability to divide and it divides by developing a ring around the organelle which constricts it to be divided into two halves.

Thus, the correct option is A) It can change in shape and size and division also occurs.

Note: The function of mitochondria is as follows,
- It is involved in cellular active=ties like cell signalling, cell senescence, cellular differentiation, etc.
- It has a role in programmed cell death or apoptosis.
- It helps in regulating the metabolic activity of the cell.
- It helps in promoting growth of new cells and also cell multiplication.