PORTAGE LEARNING CHEM 210 QUIZ 1PORTAGE LEARNING CHEM 210 QUIZ 1 Question 1 What are three ways that biochemists study biological organisms? 1) the relationship between structure and function of biomolecules 2) chemical reactions of organisms (metabolism) 3) communication within and among organisms. Question 2 What is the definition of biochemistry? Often referred to as the chemistry of life, biochemistry asks how the remarkable properties of organisms relate to their molecules. Question 3 What is another name for firefly? Lightening bugs Question 4 Is Li an element common in biological organisms? No Question 5 What is known as the “medium of life”? Water Question 6 What is the bond angle associated with trigonal pyramidal shape? 107.5 degrees Question 7 Are transition metals commonly found in biological organisms? Yes. Question 8 True or false: Water can make up 85% (by mass) of a living organism. True. Some plants are made up of 90% water by mass. Question 9 True or false: Large elements tend to make the strongest covalent bonds. False. Smaller elements tend to make the strongest bonds due to significant overlap. Question 10 Name three bulk elements. Name three trace elements. Bulk elements (three of these): H, C, N, O, Na, P, S, Cl, K, and Ca Trace elements: Mg, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Se, Mo, I, and W. Question 11 Differentiate between inorganic chemistry and organic chemistry. Organic chemistry is the study of carbon-based compounds. Inorganic chemistry is the study of all other elements. Question 12 Is H2O an organic molecule? How about CO2? C100H202? Water is not organic; it does not contain carbon. Both CO2and C100H202 are organic compounds. Question 13 The next row of Table 1 would be the 6-carbon alkane, hexane. Write out its chemical formula and condensed formula. chemical formula: C6H14 Condensed formula: CH3CH2CH2CH2CH2CH3 Question 14 On your own paper, draw the Kekule structures and line-bond formulas for both butane and hexane. Question 15 How are the aldehyde and ketone functional groups similar? Different? Aldehdyes and ketones both have a carbon double bond oxygen arrangement (C=O) in their structure. They differ in that the other two bonds that the carbon forms are different. A ketone has both
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