Bio Exam 1 Study Guide MDC (New Exam Review Qs&As 100% All Verified), Granted Pass

Life is organized in a hierarchical fashion. Which of the following sequences correctly lists that hierarchy as it increases in complexity? A) ecosystem, population, organ system, cell, community, molecule, organ, organism, tissue B) cell, molecule, organ system, organ, population, tissue, organism, ecosystem, community C) organism, organ system, tissue, population, organ, community, cell, ecosystem, molecule D) molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem E) ecosystem, molecule, cell, tissue, organism, organ system, organ, community - CORRECT ANS-D Which of the following statements about genetics is true? A) Genes are proteins that produce DNA. B) Each organism has its own unique DNA code. C) DNA relies upon five different building blocks as the alphabet of inheritance. D) Differences among organisms reflect different nucleotide sequences in their DNA. E) Each DNA molecule is a single strand of nucleotides. - CORRECT ANS-B Organisms that are prokaryotes are in the domains A) Bacteria and Archaea. B) Plantae and Animalia. C) Eukarya and Archaea. D) Archaea and Plantae. E) Fungi and Bacteria. - CORRECT ANS-A Which of the following statements about the domain Bacteria is true? A) All bacteria are "animal-like" in that they eat other organisms. B) All bacteria have a membrane-bound nucleus. C) All bacteria are multicellular organisms. D) All bacteria lack a nucleus. E) All bacteria are "animal-like" in that they eat other organisms, and all bacteria - CORRECT ANS-D Which of the following is a kingdom within the domain Eukarya? A) Viruses B) Monera C) Fungi D) Archaea E) Bacteria - CORRECT ANS-C All organisms belonging to the kingdom Plantae A) are photosynthetic. B) contain cells that are surrounded by cell walls with cellulose. C) are unicellular and lack a nucleus. D) lack a nucleus. E) are photosynthetic and contain cells that are surrounded by cell walls with cellulose - CORRECT ANS-E Members of the kingdom Fungi A) include the mushrooms. B) include the yeasts. C) decompose the remains of dead organisms and absorb nutrients from the leftovers. D) include the mushrooms and yeasts, and decompose the remains of dead organisms and absorb nutrients from the leftovers. E) use photosynthesis to produce their own food. - CORRECT ANS-D Which of the following statements is not consistent with Darwin's theory of natural selection? A) Individuals in a population exhibit variations, some of which are heritable. B) Individual organisms exhibit genetic change during their life spans to better fit their environment. C) Factors in the environment result in some organisms with better reproductive success than others. D) Natural selection is based in part on the overproduction of offspring. E) Natural selection can lead to the appearance of new species. - CORRECT ANS-D Which of the following statements about evolution is true? A) Individuals evolve within the span of their own lifetimes. B) Organisms evolve structures in response to needs. C) Evolution is deliberate and purposeful. D) Evolution is a passive process. E) Evolution is directional. - CORRECT ANS-D A hypothesis is A) the same as a theory. B) a tentative answer to some question. C) an explanatory idea that is broad in scope and supported by a large body of evidence. D) a widely accepted idea about a phenomenon. E) a widely accepted theory that is broad in scope and supported by a large body - CORRECT ANS-B A theory is A) an idea that has been proven. B) a concept in the early stages that still needs to be tested. C) a belief that has been accepted by all scientists as fact. D) a description of a belief that invokes the supernatural. E) an explanation of an idea that is broad in scope with multiple lines of evidence - CORRECT ANS-E To be scientifically valid, a hypothesis must be A) phrased as a question. B) based on faith. C) controlled. D) reasonable. E) testable and falsifiable. - CORRECT ANS-E The four most common elements in living organisms are A) C, H, O, Fe. B) C, H, O, Na. C) C, H, O, N. D) C, N, O, Na. E) Fe, N, O, Ca. - CORRECT ANS-C Which of the following is a trace element in the human body? A) carbon B) nitrogen C) zinc D) oxygen E) hydrogen - CORRECT ANS-C Which of the following trace elements is commonly added to table salt to prevent the formation of goiters? A) iodine B) iron C) calcium D) magnesium E) fluoride - CORRECT ANS-A Which of the following statements best describes a compound? A) A compound is a pure element. B) A compound is less common than a pure element. C) A compound contains two or more different elements in a fixed ratio. D) A compound is exemplified by sodium. E) A compound is a solution. - CORRECT ANS-C Which of the following particles is found in the nucleus of an atom? A) protons and neutrons B) protons and electrons C) only neutrons D) only protons E) only electrons - CORRECT ANS-A Which of the following best describes the atomic number of an atom? A) the number of protons in the atom B) the number of electrons in the atom C) the number of neutrons in the atom D) the number of protons, electrons, and neutrons in the atom E) the net electrical charge of the atom - CORRECT ANS-A A radioactive isotope is an isotope that A) is stable. B) decays. C) has more protons than the common variant of the element. D) has more electrons than the common variant of the element. E) has the same atomic mass, but a different atomic number than the common variant of the element. - CORRECT ANS-B If you found a fossilized dinosaur bone, what method could be used to determine the age of the fossil? A) electrophoresis B) DNA fingerprinting C) isotope analysis D) radial immunodiffusion E) high-pressure liquid chromatography - CORRECT ANS-C Radioactive isotopes A) are frequently added to foods as nutritional supplements. B) can be used in conjunction with PET scans to diagnose diseases. C) have no effect on living tissue. D) do not occur naturally. E) are never incorporated into organic compounds. - CORRECT ANS-B