Bsc 108 Exam #3 Questions & Solutions (100%)

Similarities among living organisms that are due to shared ancestry are called _________. {Ans: Homologies or homologous structures}Food chains {Ans: Energy links between different organisms in an ecosystem based on feeding habits.}mRNA {Ans: messenger RNA; type of RNA that carries instructions from DNA in the nucleus to the ribosome}Mutation {Ans: A change in the genetic material of a cell.}Four types of evidence that support evolution {Ans: Biogeographical, embryological, fossils, DNA and biochemical evidence}How have humans impacted biodiversity? {Ans: By their population numbers, use of land, and their lifestyles, causing damage to habitats for species}DNA fingerprinting {Ans: analysis of sections of DNA that have little or no known function, but vary widely from one individual to another, in order to identify individuals}Species {Ans: A group of similar organisms that can breed and produce fertile offspring.}Does RNA contain deoxyribose? {Ans: No, it contains ribose.}Consumers {Ans: An organism that obtains energy and nutrients by feeding on other organisms or their remains.}tRNA {Ans: transfer RNA; type of RNA that carries amino acids to the ribosome}Who was Darwin influenced by? {Ans: Ideas of gradualism from his peers Hutton and Lyell}What is adaptation?