A thymidine dimer is encountered during replication. What types of repair may occur?
What will be an ideal response?
(1) The damage could be replicated over by translesion synthesis. (2) The fork could stall, followed by fork regression. (3) Lesion bypass could occur followed by gap repair. (4) If the replication fork runs into the lesion in the process of being repaired, a double-stranded break could occur that would require recombination repair.
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The virulence of the tubercle bacillus is due to its
A. toxin. B. lysogenic conversion. C. resistance to antibiotics. D. survival within macrophages. E. lysogenic conversion AND resistance to antibiotics.
Recent studies have demonstrated evolution in populations over a span of time as short as ____
a. single years b. decades c. centuries d. thousands of years e. millions of years
____ bacteria are found inside the roots of legumes, where they receive _____ from the host plant
a. Thermophilic; water b. Cyanobacteria; minerals c. Nitrogen-fixing; carbohydrates d. Methane-producing; minerals e. Halophilic; carbohydrates
Which of the following elements is a plant micronutrient?
1.Calcium 2.Iron 3.Potassium 4.Sulfur