Exam #1 Study Guide
Exam #1 Study Guide BIOL 1105
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This 3 page Study Guide was uploaded by Meagan Samele on Saturday September 10, 2016. The Study Guide belongs to BIOL 1105 at Virginia Polytechnic Institute and State University taught by Dr. Glen Stevens in Fall 2016. Since its upload, it has received 93 views.
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Date Created: 09/10/16
Exam #1 Study Guide (Bold options are correct answer) 1. Which molecules tend to aggregate in aqueous solutions and exclude water molecules? a. Hydrophobic b. Hydrophilic c. Polar d. Nonpolar 2. Which of the following is N OT one of the functions of the nucleus? a. Protection of the DNA b. Protein Synthesis c. RNA Synthesis d. Separating the cell’s genetic information from cellular enzymes 3. ____ comprises a significant fraction of dust in the typical house? a. Actin b. Tubulin c. Keratin d. DNA 4. Which of the following is responsible for the observed neutrophil movement? a. Actin b. Microtubules c. Intermediate Filaments d. Flagella 5. Which of the following is complementary to 5’GTCATG3’? a. 5’GTCATG3’ b. 5’GTACTG3’ c. 5’CAGTAC3’ d. 5’CATGAC3’ 6. A membrane with phospholipid tails that are more saturated will have ___ hydrogen bonds and be___ fluid at a given temperature than a membrane that is less saturated. a. More, less b. Fewer, more c. Fewer, less d. More, more 7. Decreasing temperatures will generally make a membrane less fluid; cell membranes of some bacteria can respond to this by ___ the number of double bonds in the phospholipid tails to increase fluidity a. Increasing b. Decreasing c. Bending d. Halving 8. Which type of transport requires ATP energy? a. Passive b. Active c. Diffusion d. Osmosis 9. Which of the following is not a property of carbon? a. It can be built into rings and long chains b. Organic molecules do not contain carbon atoms c. Can form single, double, and even triple bonds with itself d. Constitutes the backbones of an incredible variety of molecules 10. Proteins possess all of the following functions except: a. Structure b. Encode genetic Information c. Cell Recognition d. Metabolism 11. Which group of molecules makes up about 15% of a cell mass? a. Lipids b. Polysaccharides c. Proteins d. RNA and DNA 12. Denaturation, a process in which a protein loses its native shape and function, is likely to be caused by all of the following except: a. Temperature change b. pH change c. Increase in hydrogen ion concentration d. Being transported from one cell to another in a living organism 13. The internal pH of a lysosome is typically around___, because a(n) ___environment is necessary for the function of this organelle. a. 10, basic b. 7, neutral c. 5, acidic d. 3, basic 14. All of the following are common features of eukaryotic and prokaryotic cells E XCEPT: a. Cellular respiration b. Control of gene expression c. Plasma membrane d. Mitochondria 15. A phospholipid molecule has a polar and a nonpolar end. Because of this, water molecules form: a. Ionic bonds with the polar end of the phospholipid molecule b. Hydrogen bonds with the polar end of the phospholipid c. Hydrogen bonds with the nonpolar end d. Covalent bonds with the nonpolar 16. Membrane proteins are not very soluble in water, because they possess long stretches of ____ amino acids a. Non polar b. Positivelycharged c. Negativelycharged d. Polar 17. On the outer surface of the plasma membrane there are marker molecules that identify the cell type. Often these molecules are: a. ATP b. Amino acids c. Carbohydrate Chains d. Inorganic ions 18. Which of the following is a type of lipid? a. Phospholipid b. Storage fats c. Waxes d. All of the above 19. Mitochondria is found in both plants and animal cells a. True b. False 20. Cell membranes are 3D fluids a. True b. False (They are actually 2D fluids)
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