Question

which organelle breaks down sugar molecules that supply energy to the cell?
golgi apparatus
nucleus
endoplasmic reticulum
mitochondrion

Explanation:

The mitochondrion is the powerhouse of the cell. It breaks down sugar molecules (through cellular respiration) to supply energy (in the form of ATP) to the cell. The Golgi apparatus is involved in modifying, sorting and packaging proteins and lipids. The nucleus contains the cell's genetic material. The endoplasmic reticulum is involved in protein and lipid synthesis.

Answer:

D. mitochondrion