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Unformatted text preview: Bios 100 spring 2009 First exam Relate the following cell organelles to cell function A. Cell membrane B. Ribosome C. Peroxisome D. Flagella E. Vacuole B 1. important in the production of protein E 2. a storage area in plant cells that can take up to 90% of the volume of a cell D 3. enables microorganisms to move at considerable speeds C 4. houses the enzyme catylase A. 5. is composed mostly of lipids 6. A fluorophore can be important in examining a cell because A. It can catch light and direct the energy to direct chemical reactions in a cell B. It can interact specifically with DNA to promote cell division C. It can be used to selectively label proteins and view them in a fluorescent microscope D. It enables the separation of organelles in the process of centrifugation E. it is an essential co-factor for the enzyme catalase. 7. A ribosome in a common bacterium is typically made up of A. 5 different types of lipid B. 4 types of carbohydrates C. 3 molecules of RNA and about 50 proteins D. 2 polypeptides and several glucose molecules E. 1 long strand of DNA 8. A prokaryote is likely to have all of the following EXCEPT A. Cell membrane B. Nucleus C. Ribosomes D. Flagella E. Chromosomes 9. Organelles in eukaryotic cells can be useful because A. They separate incompatible reactions B. They increase the efficiency of enzymatic reactions C. They confine the area in which chemical reactions can occur D. All of the above E. None of the above 10. The “cis” side of the Golgi apparatus A. faces towards the nucleus B. faces toward the plasma membrane C. is part of the vacuole of a plant cell D. detoxifies potentially dangerous chemicals in the cell E. is part of the mitochondrial membrane 11. The smooth endoplasmic reticulum is generally involved in A. Extensive protein production B. Movement of the cell to a new location C. Movement of organelles and vesicles within the cell to new locations D. The processing of lipids E. Nuclear envelope breakdown 12. The enzyme catalase A. is an enzyme in peroxisomes B. has a quaternary structure defined by 4 subunits C. has both alpha helices and Beta-pleated sheets D. can convert 10 6 molecules of H 2 O 2 to H 2 O per second (!) E. all of the above 13. A lysosome A. contains proteins that are optimized to work at an acidic pH B. is composed of carbohydrates C. is essential in creating peptide bonds D. is only found in plant cells E. creates glycosidic linkages between carbohydrates 14. Mitochondira A. very in number from 50 to millions depending on the cell B. contain their own DNA C. consume vast quantities of the energy-rich compound ATP D. are only found in prokaryotes E. A & B 15. The nuclear envelope A. is contiguous (connects directly to) the rough endoplasmic reticulum B. is made up mostly of complex carbohydrates C. is composed primarily of large strands of DNA D. is never present in eukaryotes E. is the primary source of quick energy for the cell 10. The “cis” side of the Golgi apparatus A. faces towards the nucleus...
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