Biology 103 Unit 1 Test Questions and Answers 100% Pass

Biology 103 Unit 1 Test Questions and Answers 100% Pass Define the smallest, most fundamental unit of life. Cell What term describes an organism made of a single cell? Unicellular How do we describe organisms composed of multiple cells? Multicellular What is the term for new qualities that arise at each level of biological organization? Emergent property List the levels of organization in living organisms, starting from the simplest. Atom, molecule, cell, tissue, organ, organ system, organism Identify the five main characteristics shared by all living things. Organized, acquire materials and energy, respond to stimuli, reproduce and develop, adapt Describe the process by which organisms become better suited to their environment. Natural selection What term refers to the gradual change in species over time? Evolution Arrange the classification categories from most specific to most general. Species, Genus, Family, Order, Class, Phylum, Kingdom, Domain What is the scientific discipline that involves identifying and classifying organisms? Taxonomy Name the three domains of life. Bacteria, Archaea, Eukarya What characteristics describe the domain Bacteria? Microscopic, asexual, unicellular prokaryotes (e.g., strep, staph, plaque on teeth) Archea unicellular asexual extreme environment Eukarya most primitive bacteria-like uni/multicellular asexual reproduction membrane-bound nucleus 4 kingdoms live in extreme environments; methanogens (live in animal intestines, explosive), halophiles (live & thrive in salty environments), thermocidophiles (survive in high temps and acidic environments) List the 4 kingdoms of Eukarya. protista fungi plantae animalia