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1- Examples of positive and negative control of transcription can be found in the regulation of expression of the bacterial operons lac and trp. Use these two operon systems to describe the difference between positive and negative regulation.
2-The number and type of proteins found in a cell can be influenced by genetic mutation and regulation of gene expression. Discuss how these two processes differ.
What is the main chemical compound found in sewer gas? Why the presence of Thiobacillus (Acidibacillus) species can cause sewer pipe (cement or iron) corrosion? Please explain from the metabolic perspective.
Assume you place a cell into a solution containing small/non-polar purple dye molecules and observe it under a microscope.
Cancer patients undergoing chemotherapy are normally more susceptible to infections. However, a patient receiving an antitumor drug that inhibited cell division was resistant to salmonella. Provide a possible mechanism for the resistance.
What is the formula to calculate lake morphometrics?
Identify the problem with this statement: PCR-based systems often yield results for a tiny sample of relatively poor-quality DNA?
Briefly describe the cellular events that occur during epithelial mesenchymal transitions (EMT).
In the 19th century the prevailing theory of inheritance was the BLENDING THEORY. According to theory of inheritance, crosses between individuals of differing phenotypes would produce F1 progeny.
Compared to impact craters on other moons, young impact craters on Europa (including the Pwyll impact crater) show a distinct absence of high crater walls, or any significant depression towards the center. What does this suggest about Europa's icy..
is when there are several reproductive castes, not just males and females, but for example when there are three kinds of females that all produce their own young in different ways.
Suppose a protein of interest is known to bind the mitochondria to the ER. Suppose these proteins are small enough to fit into the vesicles and transfer to Goldgi apparatus.
In the F2 generation, how many genotypic classes are possible from a trihybrid cross of heterozygotes in Determine which the genes involved show complete dominance?
A casino paid 28,000 for a grilled cheese sandwich that was purported to have an image of the Virgin Mary on it.
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