Site MapHelpFeedbackMethyl-directed Mismatch Repair
Methyl-directed Mismatch Repair

View the animation below, then complete the quiz to test your knowledge of the concept.






1Arrange the following proteins in the proper sequence in which they participate in methyl-directed mismatch repair.
1. Mut S
2. Mut L
3. Mut H
A)1, 2, 3
B)2, 1, 3
C)2, 3, 1
D)3, 2, 1
E)3, 1, 2



2In methyl-directed mismatch repair, the strand that is repaired is
A)the methylated strand.
B)the non-methylated strand.
C)the hemi-methylated strand.
D)either the methylated or non-methylated, depending on the type of mismatch.
E)either the methylated or non-methylated, depending on the size of mismatch.



3Methylation of DNA typically occurs at sites with the sequence
A)ATAT.
B)CTGA.
C)AGGA.
D)GTTG.
E)GATC.



4DNA pol III and DNA ligase are required to fill in the repair gap.
A)True
B)False



5The MutH protein is directly responsible for recognizing mismatched DNA base pairs.
A)True
B)False







Animation Quiz SiteOnline Learning Center

Home > Anatomy and Physiology 1 > Chapter 5 > Methyl-directed Mismatch Repair