Bio 152 Exam 1 Questions And Answers (Latest Update 2024)

Major mechanisms of evolution {Ans: Mutations/ recombination, gene flow or migrations, non-random mating, genetic drift, natural selection}Animals have what due to the blastula {Ans: Internal digestion (stomach/anus)}timeline of life on earth {Ans: 4.6 earth began, 4.3 bya-3.5 prokaryotes, 2.7 oxygen accumulates, algae 1.5 bya, oldest fossil 640 mya, Cambrian explosion 540 mya, 500 mya plants, dinosaurs 215-65 mya, 65 mya KT extinction, first primates 70 mya}Most animals are... {Ans: Arthropods}Chemohetrotrophs {Ans: Microorganisms that use organic compounds as energy and carbon source}Which of the following ends to lead to higher species diversity in a clade? that is which leads to a larger number of species within that clade? {Ans: Tight convolution with other species}Fungus have {Ans: External digestion}Mutation example {Ans: sickle cell anemia}Adaptation {Ans: A trait that enhances fitness (promotes higher reproduction)}morphospecies concept {Ans: members of the same species usually look alike}What is antibiotic resistance? {Ans: when the medicine no longer affects the bacteria because they are immune to it.}natural selection {Ans: A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits.}What two groups