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BIO5 - Howard(clh2528 Homework 5 sathasivan(48985 This...

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Howard (clh2528) – Homework 5 – sathasivan – (48985) 1 This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0points You would not expect to find RNA in which of the following structures? 1. Prokaryotic cell 2. Ribosome 3. Vacuole correct 4. Nucleus 5. Mitochondrion Explanation: Mitochondrions are known to contain their own set of genetic information separate from the cell. The nucleus is where RNA originates. Ribosomes are made from RNA and protein, and additionally it is the structure that trans- lates mRNA into proteins. Prokaryotic cells contain a nucleoid which is a region composed of genetic material such as RNA. Vacuoles are the only structures containing enzymes that would degrade RNA rendering it useless, thus it would be a loss of energy for the cell to make any form of RNA in the vacuole just for it to be degraded. 002 10.0points The cytosol 1. supports the cell and determines its shape. 2. is a static region of the cell. 3. is composed largely of water. correct 4. chemically modifies proteins and other molecules. 5. contains DNA. Explanation: The cytosol is the internal fluid of the cell where signal transduction, glycolysis, and protein synthesis takes place. 003 10.0points An antibiotic such as tetracycline inhibits bacterial ribosomes but not eukaryotic ribo- somes. What could be a plausible reason for
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