NEET BIOLOGY

Detailed explanation-1: -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. In cellular respiration sugar with the help of oxygen is broken down into ATP (energy molecule).

Detailed explanation-2: -Sugars are broken down by enzymes into the glucose, which is broken down further to make ATP in two pathways. The first pathway is called glycolysis, which occurs in the cytoplasm outside the mitochondria, and requires no oxygen. During glycolysis, glucose is broken down into pyruvate, which is a 3-carbon molecule.

Detailed explanation-3: -Lysosomes function as the digestive system of the cell, serving both to degrade material taken up from outside the cell and to digest obsolete components of the cell itself.

Detailed explanation-4: -A mitochondrion is an organelle that breaks down sugar molecules to supply energy to a cell.