BIO311c_Sathasivan-Worksheets1to10-Fall2006

BIO311c_Sathasivan-Worksheets1to10-Fall2006 - huynh...

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Cell & Molecular Biology Course Guide Sathasivan, 2006 168 Cell and Molecular Biology Course Guide Worksheets K. Sathasivan
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Cell & Molecular Biology Course Guide Sathasivan, 2006 169 WORKSHEET 1 Introduction, Small Molecules, Water and Organic Compounds. Name ____________________________________ A. Multiple Choice questions 1. All living things have the following properties EXCEPT a. they are made of cells. b. they respond to environmental stimuli. c. they are composed of carbon, hydrogen, oxygen, and nitrogen. d. they have active metabolisms. e. they have a nucleus containing chromosomes. 2. The unicellular eukaryotic cells belong to which kingdom? a. Monera b. Protista c. Plantae d. Fungi e. Animalia 3. The study of cellular and molecular biology is important because a. everyone in natural sciences must take this course. b. most graduate students study genes and development. c. DNA was discovered recently, so we all should learn more about this subject. d. many biological phenomena are better understood at the cellular and molecular levels. e. more than half a million papers are published in biology per year. 4. The Nobel prize was awarded to Kari Mullis for discovering a process to amplify DNA in a test tube without any cells involved. This type of process is known as a/an ___________ reaction/process. a. cellular b. in vitro c. in vivo d. evolutionary e. revolutionary 5. Two families belonging to the same class mammalia must also belong to same a. family b. genus c. order d. species e. phylum 6. The drain cleaner Liquid Plumber contains the base NaOH as the main ingredient. The approximate pH of this solution would be a. 1.2 b. 4.8 c. 7.0 d. 9.5 e. 5.5 7. A chlorine atom has the following number of valence electrons. a. 7 b.5 c.3 d.4 e.2 8. According to the octet rule, atoms with eight electrons in their valence shell tend to a. form ionic bonds with other atoms. b. be very reactive with other atoms. c. be biologically very important. d. be particularly stable and inert. e. form covalent bonds in aqueous solutions. 9. When the pH of Trizma base is adjusted from 10 to 8, the H + ion concentration changes a. 2 fold. b. 10 fold. c. 100 fold. d. 1000 fold. e. 3 fold.
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Cell & Molecular Biology Course Guide Sathasivan, 2006 170 10. The electronegativity of oxygen is 3.5 compared to 2.1 of hydrogen (H). Which of the following statements is correct about water (H 2 O)? a. Each hydrogen atom has a partial positive charge. b. The oxygen atom has a strong positive charge. c. Each hydrogen atom has a slight negative charge. d. The oxygen atom has a partial positive charge. e. There are covalent bonds between the hydrogen atoms. 11. Atoms with 2 electrons in their first shell and 7 electrons in their valence shell a. form ionic bonds with atoms having 1 electron in their valence shell.
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BIO311c_Sathasivan-Worksheets1to10-Fall2006 - huynh...

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