Question

Cellular respiration occurs in
A. Chloroplast
B. Golgi bodies
C. Mitochondria
D. Nucleus

Answer 1

Hint: Cellular respiration is when energy is procured from the carbon compounds. It occurs in a double membrane organelle.

Complete answer:
- Our body is made of various cells. Each cell has various organelles which have specific functions to perform. These functions when put together enforce the cell to work properly.

- A cascade of reactions occurs to harness the energy from the carbon compounds present in our food. The basic process of cellular respiration starts in the cytoplasm but the whole process thereafter is completed in the mitochondria.

- We know Glycolysis is a process of conversion of complex carbon compounds into pyruvate (simpler sugars) which when undergoing the Kelvin cycle and electron transport chain gives energy (ATP) and water as the by-products.

- So, Glycolysis is split in the cytoplasm and mitochondria. The major products are processed in the mitochondria by Krebs cycle and electron transport chain to give us the outcome of the cellular respiration that is the energy.

So the answer is option C: mitochondria

Note:
- Chloroplast has a special feature of conducting photosynthesis in the plants. It has chlorophyll which gives pigmentation to the plants. It can also capture the sunlight and store it.
- Golgi bodies have a complex of vesicles which help in the intracellular transport and secretions into the cytoplasm.
- The nucleus is the brain of the cell maintaining the overall working of all the organelles. It contains the genetic material (DNA). It maintains the integrity of the cell. It is the largest organelle in a cell covering up to one-tenth of the total volume.