Biology 103 Exam

Subatomic particles - Tiny entities of matter Protons, Neutrons, Electrons Atoms - Building block of all substances Molecules - Group of atoms bonded together Organelles - Any number of organized or specialized structures within a living cell Cells - Smallest living unit Tissues - Consisting of specialized cells and their products Organs - Structural/functional Self-contained Has specific functions Organ systems - Group of organs with functions Example: digestive system Multicellular organisms - Organisms that consist of more than one cell Population - Group of individuals of some species Community - Population of all different species in an area Ecosystem - Living communities and non-living physical environment Biotic: living Abiotic: non-living Biosphere - All ecosystems together on earth Know diagram of plant cells - The atom in a single molecules of water form ________ bonds? - Covalent Bonds that form between multiple (different) water molecules because each water molecule has a slightly negative and slightly positive region are called _____ bonds - Hydrogen Which organelle contains strong digestive enzymes (proteins) to break down other structures? - Lysosomes