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Consider a circular, B form DNA molecule with a superhelical density of -0.05. Suppose that during replication initiation, a stretch of 84 base pairs unwinds (untwists) without breaking the phosphodiester backbone. What will be the effect on the linking number (Lk) and the writhe (Wr)? (Hint: ‘untwisting' has a negative effect on the twist).
Would the passive movements of substances occur if an interstitial solute concentration was the same as the filtrate solute concentration.
An enzyme catalyzes a reaction at a velocity of 20 umol/min when the concentration of substrate (S) is 0.01 M. The Km for this substrate is 1 x 10-5 M. Assuming that Michaelis-Menten kinetics are followed,what would be the reaction velocity?
If a double heterozygous plant were crossed with a plant that has green stems and red fruit, what offspring phenotypes would be expected and in what proportions.
Since the invention of the first vaccine in the 1700s, there has been controversy whenever a new vaccine is introduced. Are they safe explain your answer.
Discuss how these drugs act on the receptors to prevent the typical symptoms of allergic rhinitis.
A test tube contains starch, pancreatic amylase, and water. The buriet is negative. After 30 minutes, Benedict's test is positive. What substance is present.
Determine the final guaiacol concentrationg of the following enzyme reaction solutions listed in the table below. Keep in mind that each reaction solution has a total volume of 2000 microliters.
The very simple genotype-phenotype relationship of dominance, codominance and recessiveness has been complicated by issues of penetrance and epistatsis.
Some times in the movie, politics of science were discussed. Explain how politics played a role in the discovery of DNA structure. Do you think the science of today is more or less political than it was during the 1950s? Examine one instance of moder..
Explain the general function of Respiratory system and describe how the Respiratory system contributes to the physiological homeostasis of human organism?
find difference between the amino acids
The global community is plagued by increasing incidence of lung cancer, colorectal cancer, breast and pancreatic cancers, prostate cancer, non Hodgkin lymphoma, liver, ovarian and esophageal cancers.
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