What components of the cell membrane allow for the movement of some small an medium molecules? Why is energy not required in this movement? Que componentes de la membrana celular permiten el movimiento de algunas moléculas pequeñas y medianas? Por que no se requiere energía en este movimiento?

b

explanation:

answer; i believe the correct answer is (a)0

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.