biodiversity multiple choice

biodiversity multiple choice - Unit Five Biological...

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Unit Five: Biological Diversity Chapter 26 - Origin of Life MULTIPLE CHOICE . Choose the one alternative that best completes the statement or answers the  question. 1) What is the strongest evidence that protobionts may have formed spontaneously?  A) The fossil record found in the stromatolites.  B) The discovery of ribozymes, showing that prebiotic RNA molecules may have been autocatalytic.  C) The production of organic compounds within a laboratory apparatus simulating conditions on early Earth.  D) The abiotic synthesis of polymers.  E) The relative ease with which liposomes can be synthesized in laboratories.  2) Current theories of prebiotic evolution are based on evidence for all of the following except the abiotic  A) production of small organic molecules.  B) production of liposomes.  C) replication of oligopeptides.  D) origin of DNA-protein interactions.  E) polymerization of amino acids. 3) The first genetic material was most likely a(n)  Use the following information to answer the questions below.
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According to the Miller-Urey experimental results, chemical evolution leading up to and including the  formation of living matter is believed to have occurred during the early history of Earth. Below are four pairs of  events that might have occurred during this period. Judge the relative time of each of these pairs of events  according to the key below. A. Event I occurred before Event II. B. Event II occurred before Event I. C. Events I and II occurred simultaneously. 4) Event I: nitrogen oxides and carbon dioxide in the atmosphere Event II: free oxygen in the atmosphere 5) Event I: formation of photosynthetic organisms  Event II: formation of heterotrophic organisms 6) Event I: formation of amino acids Event II: formation of enzymes  7) Event I: atmosphere of water, methane, and ammonia Event II: reducing atmosphere  8) Approximately how far does the fossil record extend back in time? 
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