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Unformatted text preview: syed (sms3768) – HW4 – sathasivan – (48475) 1 This print-out should have 12 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points During agarose gel electrophoresis DNA and RNA migrate towards anode that attracts an- ions. The negative charges of DNA come from 1. ribose or deoxyribose sugar. 2. phosphate group in each nucleotide. cor- rect 3. carboxyl group. 4. nitrogenous bases. 5. lipids in DNA and RNA. Explanation: The negative charges on the DNA and RNA come from the phosphate charges. 002 10.0 points Most cells are small because as they become larger, their surface area to volume ratio 1. stays the same 2. increases 3. is cubed 4. is squared 5. decreases correct Explanation: 003 10.0 points Ribosomes are not found in 1. prokaryotic cells. 2. mitochondria. 3. the Golgi apparatus. correct 4. the rough endoplasmic reticulum....
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