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1. Describe why topoisomerases are needed in eucaryotic cells even though eucaryotic DNA molecules are linear, not circular like procaryotic DNA molecules.2.a) What is the name of an antibacterial antibiotic which acts by affecting topoisomerase?b) What is the name of an anticancer drug which acts by affecting topoisomerase?3. Topoisomerases are involved in DNA replication, so it makes sense that a drug which messes up topoisomerase activity stops the cell from reproducing. However, in many cases, the cell not only stops reproducing but is also killed because its DNA is broken. Suggest a mechanism for how messing up topoisomerase activity could cause this effect on the cell's DNA.
Distribute copies of the passage. Begin the passage and the idea of using thinking strategies to identify the main idea. Today, were going to identify the main idea of a passage. What are we going to do.
How is the lifestyle of many radially symmetrical animals different from that of bilaterally symmetrical animals? Explain how the body plan complements the lifestyle using two animals as examples.
In the year following the fires, wildflowers sprouted in all burned areas, closely followed in subsequent years by seedlings of the trees that normally grow in the area, such as aspens and lodge poles pines. What changes in the Ecosystem will take pl..
How do plant and animal cells metabolize energy in complementary ways? What does this suggest about the flow of energy and the recycling of elements through living organisms? Could we think of any other similar relationships.
Genomic DNA from the nematode worm Caenorhabditis elegans is organized through nucleosomes in the manner typical of eukaryotic genomes, with 145 bp encircling each nucleosome and approximately fifty-five bp in linker DNA.
In a series of experiments, genes that code for mutant forms of a receptor tyrosine kinase are introduced into cells. The cells also express their own normal form of the receptor from their normal gene.
Advantages and disadvantages of mesoderm, the need of modifications for the elimination of nitrogenous waste, and a description of protonephridial function.
Discover the signs and symptoms associated with acute appendicitis. Why is this condition potentially dangerous to the patient. Occurs when the segment of chromosomes breaks off and becomes reattached to another chromosome.
Make an equation describe the relationship between DeltaG, equilibrium constant and prevailing concentrations of substrates and products of reactions.
In Drosophila, the map directions of genes are given in map units numbering from one end of a chromosome to the other. The X chromosome of Drosophila is 66 m.u. long.
A seven cm potato sliced is placed into an unknown solution. After the slice is immersed for one hour, the potato slice now measures six cm.
Using the knowledge of DNA replication, describe the mechanisms in place for preventing mistakes during the process. Also discuss how potential mistakes can happen? What would be the consequences of such mistakes during the process.
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