Consider this plant cell. which organelle is labeled a? nucleus vacuole ribosome mitochondrion

That is the Vacuole :D

The correct answer would be vacuole.

The vacuole is a membrane-bound cell organelle present in the cytoplasm of the cell.

It serves as the storage site where animal or plant cells store their organic and inorganic material.

For example, in plant cells store water, food material (carbohydrate, amino acids, fats, or minerals), organic acids, ions et cetera.

In plants, vacuoles help in maintaining the turgidity and rigidity of the cells. It is the reason that the size of vacuoles is larger in plant cells as compared to the animal cells.

It can occupy up to 50-90 percent volume of the plant cell.

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.