When water moves freely from a membrane containing a higher concentration to a lower concentration, the diffusion is called
a. diffusion
b. osmosis
c. active transport
d. passive transport

The correct answer is B. osmosis

Explanation:

Osmosis is the process by which water molecules move through a semipermeable membrane from area having high concentration of water towards an area having a lower concentration of water.

It can also be said that water diffuses from an area having more solute concentration to an area having lower solute concentration. The process of osmosis is passive which means that it does not require any use of energy. It is a type of diffusion. So the right answer is B. osmosis.

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.