worksheet 4 review version

worksheet 4 review version - B. Life was formed in...

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1) Match cell structures to letter in the diagram.
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1. fim bre ae 2. cap sul e 3. pro tein 4. cyt opl as m 5. pla smi d 6. cell wal l 7. nuc leoi d 8. fla gel um 9. rib oso me 10. cell me mb
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2) When bacteria are exposed to nutrient-poor conditions, they form thick-walled structures that contain chromosome and a small amount of cytoplasm. These structures are called Answer A. plasmids B. nucleoids. C. endospores. D. xospores. E. pseudomonads.
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3) A prokaryotic cell does not have a_________or__________ . Answer A. nucleus; DNA B. nucleus; membranes C. nucleus; organelles D. nucleus; ribosomes E. cell wall; membranes 4) Which of the following was demonstrated by the Miller-Urey experiment? Answer A. Life began on the pre-biotic Earth 3.5 billion years ago.
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Unformatted text preview: B. Life was formed in premordial soup. C. Life began in the oceans. D. Organic molecules important to life could have been formed from a vast array of simple chemicals. E. Life can be started experimentally in the laboratory. 5) Consider the following events in the origin of life: I. systhesis of protobiont-like structures; II. availability of basic elements C, H, O, and N; III. formation of macromolecules; IV. synthesis of amino acids and sugars. What is the correct sequence? 6) What properties of RNA make it likely to be the first self-replicating molecule? Why is it a better choice than protein?...
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This note was uploaded on 03/04/2011 for the course BIO 311C taught by Professor Satasivian during the Spring '08 term at University of Texas at Austin.

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worksheet 4 review version - B. Life was formed in...

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