Which organelle breaks down sugar molecules that supply energy to the cell ?

Mitochondria

Explanation:

This organelle is the site of ATP synthesis. As the glucose molecules are broken down, the energy in electrons is used to pump H+ ions into the intermembrane space to create a proton motive force. This proton gradient is used by ATP synthase enzyme to create ATPs that is the energy currency of cells.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.