BIO188 Test 1 Practice

BIO188 Test 1 Practice - 1. Which of the following DOES NOT...

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1. Which of the following DOES NOT influence membrane fluidity? A)length of fatty acid tails B) cholesterol content in the lipid bilayer C)number of peripheral membrane proteins D) number of carbon-carbon double bonds in fatty acid tails E) composition of polar head groups 2. The first person to see bacteria was: A)Virchow B)Mossman C)von Leeuwenhoek D)Pasteur E)Schwann 3. In biological membranes, the phospholipids are arranged in a: A)bilayer, with the fatty acid pointing toward each other B)bilayer, with the fatty acid facing outward C) single layer, with the fatty acids facing the interior of the cell D) single layer, with the phosphorus-containing region facing the interior of the cell E) bilayer, with the phosphorus groups in the interior of the membrane 4. The amino acid side chains in the interior of the phospholipid bilayer are most likely to be: A)charged B)hydrophilic C)hydrophobic D)carbohydrates E)lipids 5. Osmosis requires the presence of a semi-permeable membrane: A)True B)false 6. How does the nucleus in G2 differ than a nucleus in G1? A) The G2 nucleus has double the amount of DNA as the G1 nucleus B)DNA synthesis occurs only in the G1 phase C)Inactive cells are arrested only in the G2 phase D)During the G2, the cell prepares for S phase E) All the above 7. What is the pathway for the synthesis and secretion of insulin? A)Lysosome, vesicle, plasma membrane B)Rough ER, Golgi Apparatus, Vesicle, Plasma Membrane C)Golgi apparatus, rough ER, lysosome D) Plasma membrane, coated vesicle, lysosome E) Smooth ER, cytoplasm, plasma membrane 8. Ribosomes are the structures in which: A) Chemical energy is stored by making ATP B) cell division is controlled C) sunlight energy is converted into chemical energy D) genetic information is used to make proteins E) new organelles are made 9. Which structures are used by cells for motility: A) pili B) flagella C) cilia D) A, B, and C E) B and C 10. Stem cells have no capacity to replace themselves: A) True B) False 11. The eukaryotic cell membrane is semi-permeable: A) True B) False 12. A protein that forms an ion channel through a membrane is most likely:
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A) a peripheral protein B) a transmembrane protein C) a phospholipid D) an enzyme E) entirely outside the phospholipid bilayer 13. Because the sodium-potassium pump imports K+ ions while exporting Na+ ions, it is a couple transport system called: A)facilitated transport B) uniport C) secondary active transporter D) symport E) antiport 14. Which of the organelles listed below is involved in energy conversions: A) lysosomes B) vacuoles C) nucleolus D) peroxisomes E) chloroplasts 15. When placed in a hypertonic solution animal cells: A) burst B) swell C) shrink D) transport salt out E) aggregate 16. Lipids and carboydrates in the cell are synthesized in:
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BIO188 Test 1 Practice - 1. Which of the following DOES NOT...

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