Integrated Principles of Zoology Study Set 3

Biology

Quiz 2 :

The Origin and Chemistry of Life

Quiz 2 :

The Origin and Chemistry of Life

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Distinguish prokaryotes from eukaryotes.
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Name two simple carbohydrates, two storage carbohydrates, and a structural carbohydrate.
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Examples for the different types of carbohydrates are:
• Simple carbohydrates: glucose and fructose
• Storage carbohydrates: Starch and glycogen
• Structural carbohydrates: cellulose and chitin.

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Name three different sources of energy that could have powered reactions on early earth to form organic compounds.
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The three different sources of energy that could have powered reactions on primitive earth to form organic compounds are:
• High temperature
• Ultraviolet radiation
• Lightning

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Regarding the experiments of Miller and Urey described in this chapter, explain what constituted the following in each case: observations, hypothesis, deduction, prediction, data, control. (The scientific method is described on pp. 11-14.)
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What characteristic differences in molecular structure distinguish lipids and carbohydrates
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Describe Margulis's view on the origin of eukaryotes from prokaryotes.
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What was the "Cambrian explosion" and how might you explain it
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By what mechanism might organic molecules have been concentrated in a prebiotic world so that further reactions could occur
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Explain the difference between the primary, secondary, tertiary, and quaternary structures of a protein.
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Explain each of these properties of water, and describe how each is conferred by the dipolar nature of a water molecule: high specific heat capacity; high heat of vaporization; unique density behavior; high surface tension; good solvent for ions of salts.
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What are the important nucleic acids in a cell, and of what units are they constructed
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Explain the significance of the Miller-Urey experiments.
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Distinguish among the following: primary heterotroph, autotroph, secondary heterotroph.
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What is the source of oxygen in the present-day atmosphere, and what is its metabolic significance to most organisms living today
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What was the composition of the earth's atmosphere at the time of the origin of life, and how did it differ from the atmosphere of today
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