Biology Quiz (A+)

Homeostasis - the ability of a living thing to keep conditions inside its body constant Polymer - large molecule formed when many smaller molecules bond together Nutrient Cycle - The movement of materials (nutrients) in a local ecosystem Organism - a living thing that has (or can develop) the ability to act or function independently Polar - having a pair of equal and opposite charges Non-polar - not ionic Charged - term referring to matter having an excess of electrons (a negative charge) or a deficiency of electrons (a positive charge) Hydrophobic - Water Fearing Hydrophillic - Water Loving Solute - the dissolved substance in a solution Solvent - a liquid substance capable of dissolving other substances Covalent Bond - a chemical bond that involves sharing a pair of electrons between atoms in a molecule Molecule - (physics and chemistry) the simplest structural unit of an element or compound Hydrogen bond - a chemical bond consisting of a hydrogen atom between two electronegative atoms (e.g., oxygen or nitrogen) with one side be a covalent bond and the other being an ionic bond Macromolecule - any very large complex molecule Organelles - tiny structures that carry out functions necessary for the cell to stay alive Populations - groups of individuals that belong to the same species and live in the same area