Plant cells have a large central vacuole, which animal cells lack. what function does this organelle perform?
a) it stores energy for the plant to use later
b) it provides rigidity to the plant cell when filled with water.
c) it the plant to prepare food in the presence of sunlight.
d) it the plant to release carbon dioxide as a byproduct of photosynthesis.

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.