EXAM_ONE_ - BIOS 41: Bio Core I EXAM ONE 9Feb2011 NAME _...

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BIOS 41: Bio Core I EXAM ONE – 9Feb2011 NAME _________________________ There are 50 questions on the test, worth a total of 100 points. You should mark your answers on the test first and then transfer them to the scantron sheet (this minimizes erasures on the scantron sheet). Read each question carefully and mark answers using a No. 2 pencil. Please write the letter of this test version (right) on your answer sheet. 1. Approximately when did the first aerobic eucaryotic cells appear? (a) 65 million years ago (b) 250 million years ago (c) 800 million years ago (d) 1500 million years ago (e) 3500 million years ago 2. Approximately when did the first multicellular eucaryotic organisms appear? (a) 65 million years ago (b) 250 million years ago (c) 800 million years ago (d) 1500 million years ago (e) 3500 million years ago 3. Approximately how many cells make up your body? (a) 10 12 (b) 10 14 (c) 10 16 (d) 10 18 (e) 10 23 4. What is the approximate mass of one of your cells? (a) one nanogram (b) 300 nanograms (c) one microgram (d) 300 micrograms (e) one milligram 5. What length would you associate with the “width” of a typical human cell? (a) 0.00002 millimeters (b) 0.0002 millimeters (c) 0.002 millimeters (d) 0.02 millimeters (e) 0.2 millimeters VERSION A
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6. In the schematic drawing of an animal cell shown here, which numbers indicate, in order, the Golgi apparatus, the endoplasmic reticulum, and the mitochondrion? (a) 2, 4, 7 (b) 4, 2, 6 (c) 7, 5, 2 (d) 6, 2, 7 (e) 7, 5, 4 7. The __________ __________ is made up of two concentric membranes and is continuous with the membrane of the endoplasmic reticulum. (a) plasma membrane (b) Golgi network (c) mitochondrial membrane (d) nuclear envelope (e) cytosolic lysosome 8. Which of the following organelles has both an outer and an inner membrane? (a) endoplasmic reticulum (b) ribosome (c) mitochondrion (d) lysosome (e) peroxisome 9. The mitochondrial conversion of ADP to ATP consumes which one of the following? (a) potassium (b) oxygen (c) nitrogen (d) sulfur (e) carbon dioxide 10. Where is chlorophyll located in the chloroplast? (a) in the first, outer membrane (b) in the space between the first and second membranes (c) in the second, inner membrane (d) in the space between the second and third membranes (e) in the third, inner-most membrane 11. What is the name of the commonly occurring unsaturated fatty acid in cell membranes that has 16 carbon atoms and one double bond? (a) Palmitic acid (b) Palmitoleic acid (c) Oleic acid (d) Stearic acid (e) Stearoleic acid 12. To a rough approximation, what is the strength of a typical hydrogen bond, compared to thermal energy?
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(a) About 1/10,000 as strong as thermal energy (b) About 1/100 as strong as thermal energy (c) About equal to thermal energy (d) About 100 times thermal energy (e) About 10,000 times thermal energy 13. Compared to ribose, the sugar deoxyribose in DNA nucleotides is missing an oxygen atom attached to which carbon atom of the sugar? (a)
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This note was uploaded on 10/03/2011 for the course BIOS 41 taught by Professor Sands during the Spring '08 term at Lehigh University .

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EXAM_ONE_ - BIOS 41: Bio Core I EXAM ONE 9Feb2011 NAME _...

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