Bio 101 - Quiz 2 Blue Key

Bio 101 - Quiz 2 Blue Key - Biology 101: An Introduction to...

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Unformatted text preview: Biology 101: An Introduction to Biology Winter Quarter 2008 Lecture Quiz 2, Blue Form Instructions: For each question below, fill in the space on the bubble sheet corresponding to the best answer for that question. There is always one best answer, though more than one may appear plausible upon first glance. This quiz covers class and reading material from 1/15-1/17 and is worth 20 points. Be sure to indicate on the top of your answer sheet which color of quiz you are taking; if you fail to do this, your answer sheet may be graded with the wrong key and you will be responsible for the poor grade that will likely result. 1. Which of the following is typically part of microevolution? A. Adaptive explosions of many taxa of organisms B. Mass extinctions C. Gradual changes in allele frequency in a population D. The origin of genera, families, classes, etc E. Major environmental/geological upheavals 2. What is the basis of the biological species concept? Organisms... A. Being able to interbreed and produce fertile offspring B. Relating to the environment in the same way C. Sharing a common ancestor D. Exhibiting homologous structures E. Having 99% of their genes in common 3. Based upon the newspaper article "Deadly pest lurks in forest" and our discussions in class, which of the following statements is NOT true of the Emerald Ash Borer (EAB)? A. The EAB may result in the complete destruction of ash species in North America. B. North American species of ash trees can usually mount a sufficient immune response to limit the damage caused by the EAB. C. It is likely that the EAB entered North America in Detroit on wooden shipping crates from Asia. D. One costly method for trying to prevent the spread of the EAB is to cut down all ash trees in a large swath surrounding trees that are infested by the EAB. E. The EAB kills ash trees by girdling them and stopping the flow of water and nutrients to the leaves. 4. Paleontologists were studying the fossil record and observed in a few strata of rocks the appearance of many different groups of organisms with different characteristics and body form. The most suitable scientific description of this observation would be: A. Macroevolution B. Gradualism C. Genetic drift D. Microevolution E. Special creation 5. Which of the following is NOT true regarding phylogenetic trees? A. Phylogenetic trees are used to classify organisms according to evolutionary history B. Include clades or groups of organisms with common characteristics C. Phylogenetic trees are used only in the classificaton of living organisms D. Phylogenetic trees are used by systematists to study past and present biological diversity E. Utilize morphological, evo-devo (evolutionary and developmental biology), and genetic (DNAsequence) similarities to group organisms 6. Based upon the newspaper article "Scientists around world in race to create artificial life", which of the following statements is NOT true? A. There are three suggested components that must be created in order to produce an artificial cell: a membrane, genetic material to control its functions and allow it to reproduce, and a metabolism to provide energy. B. Normal DNA consists of four bases but scientists are trying to add eight new bases to genetic code. C. Scientists think that, once created, there will be relatively little risk in these cells "running amok". D. The first synthetic life will likely be microscopic. E. Scientists believe man-made life forms will one day offer the potential for solving a variety of problems, from fighting diseases to locking up greenhouse gases to eating toxic waste. 7. Male sharks have claspers that do not allow them to mate with female sharks of other species. This is best defined as... A. Mechanical incompatability B. Geographic or habitat isolation C. Behavioral isolation D. Hybrid sterility E. Temporal isolation 8. Based upon our discussion in class and the newspaper article "Tiny specks of misery, both vile and useful" that describes the functioning of viruses, which of the following statements is NOT true? A. Viruses contain either RNA or DNA B. Base for base, up to 50% of human DNA is similar to viral DNA C. Viral DNA may be critical for our immune systems to adapt rapidly to viral infections D. Viruses are long-lived on many surfaces outside the body increasing their opportunities for infecting new hosts E. The viral capsid contains glycoproteins that allow the virus to bind to receptors on the surfaces of specific cells 9. A farmer observes a severe infestation of locusts in his hayfield and decides to eliminate the pests using a newly formulated pyrethroid insecticide. He applies the insecticide and kills 99% of the locusts. Using your general knowledge of natural selection, approximately what percentage of the next generation of locusts would you expect to be killed by the insecticide, assuming only the progeny of the sprayed locusts was present in the field? A. 100% B. 99% C. 50% D. 10% E. 95% 10. Based upon the newspaper article "Don't trust your daughter with a teenage allosaur", which of the following statements is NOT true? A. Dinosaurs were capable of reproduction as adolescents. B. Scientists found medullary bone in the fossilized bones of two young dinosaurs. C. The idea that dinosaurs were able to reproduce as adolescents suggests that dinosaurs live to be very old. D. Scientists were lucky to find medullary bone in the female dinosaur fossils since it was thought to only be present for a few weeks, as in modern birds. E. The presence of medullary bone suggests that dinosaurs were more closely related to birds than modern day reptiles such as crocodiles and turtles. ...
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