The function of helicase enzymes is to ____.
A. break hydrogen bonds between the two strands of the DNA molecule prior to replication
B. rewind the two DNA molecules after replication
C. remove bases that might have been inserted incorrectly
D. seal new short stretches of nucleotides into one continuous strand
E. fragment old DNA that is no longer of use to the cell
Answer: A
You might also like to view...
The goal of wastewater treatment is to
A) produce potable water. B) remove pathogens from wastewater before it is released. C) reduce organic and inorganic materials in wastewater to a level that no longer supports microbial growth. D) remove pathogens from wastewater to produce potable water.
What happens to the coelom as each phyla of protostomes evolve?
What will be an ideal response?
Assume that the genes for tan body and bare wings are 15 map units apart on chromosome II in Drosophila
Assume also that a tan-bodied, bare-winged female was mated to a wild-type male and that the resulting F1 phenotypically wild-type females were mated to tan-bodied, bare-winged males. Of 1000 offspring, what would be the expected phenotypes, and in what numbers would they be expected?
A typical breath at rest moves about 0.5 liters of air, which is referred to as the ________ volume.
A. tidal B. residual C. exhaled D. resting