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  • Chemistry 1- Semester 1
  • Chemistry 1- Semester 1
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Chemistry 1- Semester 1 Exam-- Chapter 4 Vocab QUESTION AND ANSWER 2024 GRADED A+ UPGRADE

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Institution Chemistry 1- Semester 1
Course Chemistry 1- Semester 1
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2. What feature is commonly seen in the sequences recognized by type II restriction enzymes? - CORRECT ANSWERS-Solution: The recognition sequences are palindromic, and 4−8 base pairs long. 3. What normal role do restriction enzymes play in bacteria? How do bacteria protect their own DNA from the action of restriction enzymes? - CORRECT ANSWERS-Solution: Restriction enzymes cut foreign DNA, such as viral DNA, into fragments. Bacteria protect their own DNA by modifying bases, usually by methylation, at the recognition sites. 4. Explain how gel electrophoresis is used to separate DNA fragments of different lengths. - CORRECT ANSWERS-Solution: Gel electrophoresis uses an electric field to drive DNA molecules through a gel that acts as a molecular sieve. The gel is an aqueous matrix of agarose or polyacrylam

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