Doc-29011 - Unit Five: Biological Diversity Chapter 26 -...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 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) A) DNA polymer. B) protein enzyme. C) DNA oligonucleotide. D) RNA polymer. E) protein. Use the following information to answer the questions below. 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? A) 6,000 years B) 3,500,000 years C) 6,000,000 years D) 3,500,000,000 years E) 5,000,000,000,000 years 9) Which of the following is the strongest evidence that prokaryotes evolved before eukaryotes? A) the primitive structure of plants B) meteorites that have struck the Earth C) abiotic experiments that constructed liposomes in the laboratory D) Liposomes look like prokaryotic cells. E) The oldest fossilized cells resemble prokaryotes. 10) In his laboratory simulation of the early Earth, Miller observed the abiotic synthesis of A) liposomes. B) complex organic polymers. C) amino acids. C) amino acids....
View Full Document

Page1 / 32

Doc-29011 - Unit Five: Biological Diversity Chapter 26 -...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online