Wvu bio 117 - Study guides, Class notes & Summaries

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crosscurrent exchange - ANSWER water going in both directions for gills keeps diffusion at a high rate fish move forward, water going front to back, blood goes other spiracles - ANSWER holes insects breathe through tracheal systems - ANSWER organisms with no lungs have this terrestrial mammals - ANSWER lungs are "wet" meaning that oxygen has to be dissolved in water to be used hemoglobin - ANSWER major protein found in red blood cells that can bind up to four molecules of oxygen

evolution Correct Answer: a change in a population over time natural selection Correct Answer: traits within a population vary, and some individuals leave more offspring than others based on Fitness and selection pressure Five Mechanisms of evolutionary change Correct Answer: natural selection gene flow nonrandom mating genetic drift mutation Fitness Correct Answer: reproductive success

Bio 117 WVU Exam 2 Questions with Correct Answers

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BIO 117 Exam 2 WVU Barry with 100- correct answers(verified for accuracy)

Bio 117 WVU Questions with correct answers