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Review Questions - Exam 1 - Fall 2009

Review Questions - Exam 1 - Fall 2009 -...

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BIO 101: General Biology 1 Fall 2009 Study Questions for Exam #1: Chapters 1-3 and Ecosystem Introduction Chapter 1: Introduction: The Scientific Study of Life Pages covered from text – pp. 2-11 Terms: 1. Discovery Science 2. Scientific Method (Hypothesis-driven science) 3. Scientific names (binomial nomenclature) 4. The three domains, and 4 kingdoms in Domain Eukarya Concepts: 1.Be able to describe the 6 characteristics of life given in class 1. Order – complex organization, composed of cells 2. Regulation – organisms maintain internal environment 3. Growth & Development 4. Process Energy – Plants=energy from the sun, Animals=food 5. Organisms interact with one another & environment 6. Reproduction 7. *Evolutionary Adaptation – Best traits passed on to offspring 2. Be able to describe what scientists mean by the following terms: hypothesis, fact, law and theory. Hypothesis = testable statement Fact = observation that has been repeated, confirmed, and accepted as true. Law = Descriptive generalization about some aspect of how the natural world behaves under certain circumstances (ex. Law of Gravity) Theory = well substantiated explanation of some aspect of the natural world that can incorporate facts, laws, inferences, and tested hypotheses. 3. What is meant by the phrase “science is not set in stone?” - Understanding & knowledge is always growing and expanding. Scientists redo each other’s experiments to prove or disprove the results. 4. How is science cumulative and progressive, and self-correcting? - Cumulative because information builds on itself. Self correcting because scientists publish their findings for other scientists to repeat and either support or question the results. 5. The difference between correlation and causation. - Correlation = an apparent relationship between variables - Causation = an established relationship between variables 6. How energy flows and chemicals cycle in a system - Energy FLOWS – cannot be created or destroyed. Almost all energy comes from the sun. Some of the energy can be used, but much of it is lost as heat. - Energy has to be continually brought into a system, which is why we have to eat daily. - Chemicals CYCLE – they are recycled over and over. Nature recycles. Chapters 34, 36-37: Introduction to Ecosystems Pages/Sections given for each topic below Terms: 1. Ecosystems (Chapter 34, p. 682) ii. Biotic and abiotic factors in ecosystems (pp. 682-684) 3. Population (Chapter 36, p. 726) 4. Community (Chapter 37, p. 742) 5. Trophic structures – producers, consumers (herbivores, carnivores, omnivores), decomposers (detritivores), (Chapter 37, p. 746)
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6. Predator / prey (p.742-743) 7. Food chains and food webs (pp. 746-747) viii.
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