Which of the following statements about methyl-directed mismatch repair systems is FALSE?
A. Methyl-directed mismatch repair systems are most often used to correct pyrimidine dimers.
B. Methyl-directed mismatch repair systems require exonucleases.
C. Methyl-directed mismatch repair systems require the concerted actions of several proteins.
D. Methyl-directed mismatch repair systems recognize incorrectly matched base pairs in the DNA.
E. Methyl-directed mismatch repair systems exist in all species.
Answer: A
You might also like to view...
Which of these transposable elements do not carry genes for functions other than those needed for transposition?
A. Retrotransposons B. Insertion sequences C. Composite transposons D. Conjugal transposons
Myosin II is found in skeletal muscle and the contractile ring. It is a two-headed myosin with tails that can form thick filaments. Other myosins such as myosin I or myosin V do not form thick filaments and yet are still capable of producing movement along actin filaments. To what do the tail(s) of myosin I or myosin V bind?
a. Cargo such as membrane vesicles or intermediate filaments b. Centrosomes c. Chromosomes d. Tubulin
Explain why high blood pressure can be both a cause and consequence of renal damage.
What will be an ideal response?
In a(n) (hypertonic/isotonic/hypotonic) solution, an animal cell can gain so much water that it may burst
What will be an ideal response?