BIO 230
Purdue University
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BIO 230 FINAL EXAM ADDITIONAL REVIEW QUESTIONS
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---13November 20212020/2021A
- BIO 230 FINAL EXAM ADDITIONAL REVIEW QUESTIONS 
1. What are the two components of the proton-motive force? 
a)pH gradient and equilibrium 
b) pH gradient and voltage 
c)voltage and ATP 
d) voltage and lipid-soluble agents 
2. Which molecule is responsible for unwinding DNA supercoils before replication in E. coli? 
a. DNA helicase 
b. DNA ligase 
c. DNA polymerase III 
d. Gyrase 
e. Topoisomerase I/II 
3. What is the likely cause of an operon that is normally inducible switching to always on, re...
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