Biology 103 Exam 1 Study Guide (Chapters 1-3) Questions with Verified Answers

Biology 103 Exam 1 Study Guide (Chapters 1-3) Questions with Verified Answers What is the smallest unit of matter? Atoms What do you call two or more atoms chemically bonded together? Molecules What is considered the smallest unit of life? Cell What are the general characteristics of living organisms? Grow and reproduce; use and produce energy List five general characteristics of living things. Growth and reproduction, organization, response to stimuli, DNA, energy What is the term for the ability to do work? Energy What are substances necessary for maintaining health? Nutrients What are organisms that convert sunlight into chemical energy called? Producers What term describes organisms that cannot produce their own food? Consumers What internal and external sensors help maintain stability in the body? Receptors and Homeostasis What term describes a group of species that share unique features, with the first letter capitalized? Genus What are individuals that share one or more heritable traits and can interbreed called, with the name in lowercase and italicized if typed or underlined if handwritten? Species Name the three domains of organisms. Archaea, Bacteria, Eukarya What are organisms with no nucleus and smaller, simpler cells called? Prokaryotes What are organisms with a nucleus and larger, more complex cells called? Eukaryotes Describe the approach of the scientific method. OHEAR: Observation, Hypothesis, Experiment, Assess results, Report