KSU Biology 198 Exam 1 Questions With 100% Correct Answers

KSU Biology 198 Exam 1 Questions With 100% Correct Answers Microscope - answerA device used to see tiny organisms, used for research and counting. Spectrophotometer - answerA device that passes light through a substance in order to assess the absorption and transmittance. Absorbance - answerMeasurement of the amount of light captured by the dissolved or suspended material. Transmittance - answerThe fraction of incident light at a specified wavelength that passes through a sample. investigated - answerThe questions that are asked in science should be able to be _______. Hypothesis - answerA prediction for why something is the way that it is, or why something occurs. Should be testable and falsifiable (able to be disproved). Theory - answerA _____ is a well confirmed answer/prediction/explanation of nature that is supported by large body of evidence. Observation - answerThe act of watching something in order to gain information. It is completed before making a hypothesis. Experiment - answerAn orderly procedure carried out with the goal of verifying, refuting or establishing validity of a hypothesis. Control - answerA group that is separated from the rest of the experiment where the variable being tested cannot effect it. Variable - answerAny factor that can be controlled, changed or measured in an experiment. Life - answer_____ distinguishes organisms from inorganic objects and dead organisms, being manifested by growth through metabolism, reproduction and the power of adaptation. Life - answerThe following are characteristics for what? -organized -require energy -grow and develop -respond to environment -can reproduce -adapt to environment AMCTOOPCEB - answerLevels of Organization in Living Things (acronym) Repeatability - answer_____ is required in order for scientists to accept an observation or the results of an experiment; helps with validity of said experiment. Sampling - answerMaking tests or observations on a subset of the entire population of experimental objects. variable - answerA good experiment should have only one ________. Evolution - answer_________ is the change in the inherited characteristics of biological characteristics of populations over successive generations. Natural Selection - answer_____ _______ is the gradual process by which biological traits become either more or less common in a population. Heritable Traits - answerNatural selection affects a population through what? Natural Selection - answerThe following are necessary for what to occur? 1. Heritable variations exists in a population 2. The number of offspring that can be produced is greater than the number that are produced 3. Not all individuals in a population are equally successful at survival and reproduction; this differential success is at least partially due to different inherited traits in the different individuals T - answerTrue or false: environmental factors can be agents of natural selection Relative Fitness - answerMeasurement for how well individuals with certain traits survive and reproduce in a particular environment. Cumulative - answerIs evolution better represented by the single-step or cumulative model? Biodiversity - answer_____ is due to evolution and natural selection. Without it we would all be the same. Phylogeny - answerThe hypothesized evolutionary relationships between species.