110%20Exam2%20F10%20Red%20Key

110%20Exam2%20F10%20Red%20Key - Biology110Fall2010...

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Exam II Biology 110 – Fall 2010 Dr. David H. Bos INSTRUCTIONS: The use of calculators, cell phones or other electronic devices is not allowed during the exam. There are 34 questions on this exam. There is only one correct answer for each question. Read each question carefully and choose the best answer. Do not fill in multiple answers, as they will be marked incorrect. Turn in only the answer sheet when you are done. You may keep the exam. Take your time, think and good luck! 1. In a repeat of the Grendel and Gorter experiment, analysis on which of the following organelles would result in a ratio of about 5:1 when comparing the surface area of the phospholipids with the surface area of the organelle? a. Nucleus b. Mitochondria c. Endoplasmic reticulum d. Chloroplast e. 2. In comparing outdoor soil bacteria you take two samples, one in the summer the other in the winter. Compared to the sample collected summer, the membranes of the bacteria collected in the winter will: a. Have more phospholipids with unsaturated and short-chain fatty acids b. Have more phospholipids with saturated and long-chain fatty acids c. Have more phospholipids with unsaturated and long-chain fatty acids d. Have more phospholipids with saturated and short-chain fatty acids e. Have membrane phospholipids that are not different than the other sample 3. Which mechanism of transport is likely to move several very large proteins into a cell at once? a. Facilitated diffusion b. Coupled transport c. Endocytosis d. Exocytosis e. Simple diffusion 4. Assuming that a cell is lacking aldosterone (a relatively small steroid hormone) and there is excess aldosterone in the blood stream, what transport mechanism will likely be used to move aldosterone into a cell? a. Facilitated diffusion b. Coupled transport c. ATP-driven active transport d. Simple diffusion e. Exocytosis 1
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5. What type of transporter can move two different molecules in the same direction? a. Uniporter b. Symporter c. Antiporter d. Teleporter e. Channel 6. Which of the following are not mechanisms of active transport? a. Exocytosis b. Endocytosis c. Osmosis d. Coupled transport e. All of the above are mechanisms of active transport 7. A cell placed in a solution containing fewer solutes than are dissolved in the cytoplasm of the cell itself. What will the osmotic result be? a. Ions will move out of the cell via transport proteins
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This note was uploaded on 02/07/2011 for the course BIO 111 taught by Professor Dr. bos during the Fall '10 term at Purdue University-West Lafayette.

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110%20Exam2%20F10%20Red%20Key - Biology110Fall2010...

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