Evolution the Themes of Biology and Scientific Inquiry

Evolution, the Themes of biology, and Scientific Inquiry 1) Cells are _____. A) only found in pairs, because single cells cannot exist independently B) limited in size to 200 and 500 micrometers in diameter C) characteristic of eukaryotic but not prokaryotic organisms D) characteristic of prokaryotic and eukaryotic organisms Answer: D 2) In comparison to eukaryotes, prokaryotes _____. A) are more structurally complex B) are larger C) are smaller D) do not have membranes Answer: C 3) Which of the following types of cells utilize deoxyribonucleic acid (DNA) as their genetic material but do not have their DNA encased within a nuclear envelope? A) animal B) plant C) archaean D) fungi Answer: C 4) To understand the chemical basis of inheritance, we must understand the molecular structure of DNA. This is an example of the application of which concept to the study of biology? A) evolution B) emergent properties C) reductionism D) feedback regulation Answer: C 5) A localized group of organisms that belong to the same species is called a _____. A) community B) population C) ecosystem D) family Answer: B 6) Which of the following statements is FALSE regarding the complexity of biological systems? A) An understanding of the interactions between different components within a living system is a key goal of a systems biology approach to understanding biological complexity. B) Knowing the function of a component of a living system can provide insight into its structure and organization. C) Understanding the chemical structure of DNA reveals how it directs the functioning of a living cell. D) An ecosystem displays complex properties not present in the individual communities within it. Answer: C 7) When a person gets dehydrated while exercising on a hot day, their pituitary gland releases ADH, a hormone that signals the kidneys to retain more water. This is an example of A) Positive feedback regulation B) Negative feedback regulation C) Chemical cycling D) Emergent properties Answer: B 8) Prokaryotes are classified as belonging to two different domains. What are the domains? A) Bacteria and Eukarya B) Archaea and Monera C) Bacteria and Protista D) Bacteria and Archaea Answer: D 9) Which of these provides evidence of the common ancestry of all life? A) near universality of the genetic code B) structure of the nucleus C) structure of cilia D) structure of chloroplasts Answer: A 10) Which branch of biology is concerned with the naming and classifying of organisms? A) informatics B) taxonomy C) genomics D) evolution Answer: B 11) The phylogenetic tree below _____. A) depicts the three major domains of life B) includes unicellular but not multicellular life C) includes unicellular and some forms of multicellular life, but not complex animals and plants D) includes noncellular life-forms Answer: A 12) In the diagram below, "A" is _____ ; "B" is _____. A) the most recent species to evolve on Earth; an ancestor of group "A" B) the most recent species to evolve on Earth; the last common ancestor of Archaea and Eukarya C) the common ancestor of all life; the common ancestor of Bacteria and Archaea D) the common ancestor of all life; the last common ancestor of Archaea and Eukarya Answer: D 13) You find yourself standing next to a beautiful rose bush. Which of the following do you and the rose have in common? A) You both are multicellular. B) You both lack a membrane-bound nucleus. C) You are both prokaryotic. D) You and the rose have nothing in common. Answer: A 14) Which of the following is (are) true of natural selection? A) It requires genetic variation. B) It results in descent with modification. C) It involves differential reproductive success. D) It requires genetic variation, results in descent with modification, and involves differential reproductive success. Answer: D 15) Charles Darwin proposed a mechanism for descent with modification that stated that organisms of a particular species are adapted to their environment when they possess _____. A) non-heritable traits that enhance their survival in the local environment B) non-heritable traits that enhance their survival and reproductive success in the local environment C) heritable traits that enhance their survival and reproductive success in the local environment D) heritable traits that decrease their survival and reproductive success in the local environment Answer: C 16) Which of the following best describes what occurred after the publication of Charles Darwin's On the Origin of Species? A) The publisher was pressured to cease distribution. B) The book was banned from schools. C) The book was widely discussed and disseminated. D) The book was discredited by most scientists. Answer: C 17) Darwin's finches, collected from the Galápagos Islands, illustrate which of the following? A) mutation frequency B) ancestors from different regions C) adaptive radiation D) vestigial anatomical structures E) the accuracy of the fossil record Answer: C 18) Cotton-topped tamarins are small primates with tufts of long white hair on their heads. While studying these creatures, you notice that males with longer hair get more opportunities to mate and father more offspring. To test the hypothesis that having longer hair is adaptive in these males, you should _____. A) test whether other traits in these males are also adaptive B) look for evidence of hair in ancestors of tamarins C) determine if hair length is heritable D) test whether males with shaved heads are still able to mate Answer: C The following experiment is used for the corresponding question(s). A researcher discovered a species of moth that lays its eggs on oak trees. Eggs are laid at two distinct times of the year: early in spring when the oak trees are flowering and in midsummer when flowering is past. Caterpillars from eggs that hatch in spring feed on oak flowers and look like oak flowers. But caterpillars that hatch in summer feed on oak leaves and look like oak twigs. How does the same population of moths produce such different-looking caterpillars on the same trees? To answer this question, the biologist caught many female moths from the same population and collected their eggs. He put at least one egg from each female into eight identical cups. The eggs hatched, and at least two larvae from each female were maintained in one of the four temperature and light conditions listed below. In each of the four environments, one of the caterpillars was fed oak flowers, the other oak leaves. Thus, there were a total of eight treatment groups (4 environments × 2 diets). 19) Refer to the accompanying figure. Which one of the following is NOT a plausible hypothesis to explain the differences in caterpillar appearance observed in this population? A) The longer day lengths of summer trigger the development of twig-like caterpillars. B) The cooler temperatures of spring trigger the development of flowerlike caterpillars. C) Differences in air pressure, due to differences in elevation, trigger the development of different types of caterpillars. D) Differences in diet trigger the development of different types of caterpillars. Answer: C 20) Refer to the accompanying figure. In every case, caterpillars that feed on oak flowers look like oak flowers. In every case, caterpillars that were raised on oak leaves looked like twigs. These results support which of the following hypotheses? A) The longer day lengths of summer trigger the development of twig-like caterpillars. B) Differences in air pressure, due to elevation, trigger the development of different types of caterpillars. C) Differences in diet trigger the development of different types of caterpillars. D) The differences are genetic. A female will either produce all flowerlike caterpillars or all twig-like caterpillars. Answer: C 21) Refer to the accompanying figure. Recall that eggs from the same female were exposed to each of the eight treatments used. This aspect of the experimental design tested which of the following hypotheses? A) The longer day lengths of summer trigger the development of twig-like caterpillars. B) Differences in air pressure, due to elevation, trigger the development of different types of caterpillars. C) Differences in diet trigger the development of different types of caterpillars. D) The differences are genetic. A female will either produce all flowerlike caterpillars or all twig-like caterpillars. Answer: D 22) Recall the caterpillar experiment in which caterpillars born in the spring looked like flowers, and caterpillars born in the summer looked like twigs. What is the most likely selective advantage for this difference in body shape? A) Looking like their food sources allows the caterpillars to move through their environment more efficiently. B) Development into the adult moth form is faster for caterpillars shaped like twigs than like flowers. C) Looking like their food source lets the caterpillars blend into their surroundings, reducing predation. D) Looking like their food source will increase the caterpillars' feeding efficiency; this would increase their growth rate and survival rate. Answer: C