Cells in an eukaryotic organism contain organelles (i.e. mitochondria), that transform the energy in food into energy that can be used for various cellular processes
Metabolic processes involve all the chemical reactions that take place in cells, as well as the chemical reactions that need energy to transport molecules and build the cellular structures necessary for all life processes
Electronegativity Examples: O 2 -> oxygen has an EN of 3.44 3.44 - 3.44 = 0 ∆ EN = 0, therefore each atom in an oxygen molecule has an equal attraction for the bonding pair of electrons. This is a covalent bond.
Electronegativity Examples: HCl -> H has an EN of 2.20, Cl has an EN of 3.16 3.16 - 2.20 = 0.96 ∆ EN = 0.96, therefore chlorine has a slightly great pull on the bonding pair of electrons. This is a polar covalent bond.
Electronegativity Examples: NaCl -> Na has an EN of 0.93, Cl has an EN of 3.16 3.16 - 0.93 = 2.23 ∆ EN = 2.23, therefore chlorine has a substantially greater pull on the bonding pair of electrons. This is an ionic bond.