311C F10 Exam1PQ

311C F10 Exam1PQ - Bio311C Exam 1 Practice Questions...

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Bio311C Exam 1: Practice Questions True/False. For each of the following, determine if the statement is true or false. If true, write true. If false, correct the statement or explain why it is false. 1. C – H and O – H are both nonpolar covalent bonds. 2. The pH of solution A is 3. The pH of solution B is 6. Solution B is two times as acidic as solution A. 3. An ionic bond forms between a cation and a positively charged ion. 4. Isomers have the same number of carbon atoms, but different number of hydrogen atoms. 5. Isotopes differ in their electron configuration. 6. All biomolecules are polymers. 7. Messenger RNAs (mRNAs) carry amino acids to the site of protein synthesis. 8. All proteins have quaternary structure. 9. All lipids are built from fatty acids. 10. The sex hormones estrogen and testosterone are included in the steroids because they are hormones. Greater than, Less than? For each of the following, compare the quantities described in the two columns. Choose: a. if column A is greater than column B b. if column B is greater than column A c. if the two columns are equal d. if the answer cannot be determined with the information given. Column A Column B 11. pH of a solution with [H+] = 10 -2 M pH of a solution with [H+] = 10 -12 M 12. H-bonds within one water molecule H-bonds between two water molecules 13. Atomic # of an atom Mass # of an atom 14. # of molecules in a mole of glucose # of molecules in a mole of sucrose 15. Number of protons in a sodium cation. Number of electrons in a sodium cation. 16. Number of amino acids in a polypeptide. Number of amino acids in a protein. Multiple Choice. Choose the best response. 17. What is the approximate atomic mass of an atom with 16 neutrons, 15 protons and 15 electrons? a. 15 daltons b. 16 daltons c. 30 daltons d. 31 daltons e. 46 daltons
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18. The pH of a solution changed from 6 to 3. The solution: a. now contains 100 times as many OH - ions. b.
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This note was uploaded on 11/10/2011 for the course HDF 304 taught by Professor Gray during the Spring '08 term at University of Texas.

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311C F10 Exam1PQ - Bio311C Exam 1 Practice Questions...

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