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1.Based on your knowledge of enzymes and protein synthesis, summarize two ways that metabolic pathways can be regulated, (as has been discussed previously)2. Explain what it means when genes are described as being "expressed constitutively*, What are the limits of this type of gene regulation? How does this differ from negative gene control or regulated genes?3.Why do we generally view gene control in prokaryotes as occurring at the transcriptional level?4.Diagram the structural and regulatory components of the lac operon and describe how this group of genes enables E.coli to metabolize lactose and stillconserve energy and resources.5.Compare the two operon examples that we studied, inducible genes and repressible genes, in terms of their similarities and differences.6.Distinguish between structural and regulatory genes,7.Compare the levels of gene regulation in prokaryotes vs eukaryotes. Why must one be so much more complicated than the other?8.How does the structure of the DNA in eukaryotes affect its expression?9.In what ways does transcriptional control of genes in eukaryotes resemble the control systems in prokaryotes?10.Describe two benefits of transcript processing control. How can a single gene code for more than one polypeptide chain or protein?11 .What are the kinds of modifications that occur during post-translational control.
The earth's early atmosphere did not contain oxygen. This changed dramatically once the early cells underwent photosynthesis.
A research associate working for Intragene Therapeutics prepares an investigative PCR reaction to screen human tissue samples for specific mutations
Explain the process of transforming bacteria with a recombinant plasmid?
1. What effect did the addition of the enzyme (lactase) have on the fermentation rate of lactose? Why?
Define microbial antagonism, and discuss how the various microbial populations keep each other "in check" with consequences for human health.
Fungi eat by dumping digestive enzymes out of their bodies (mycelium) and then bringing in nutrients. Describe why the shape of fungus makes this possible.
1. What is the relationship between the structure of a blood vessel and blood pressure? 2. What is the relationship between the structure of a blood vessel and blood velocity?
Albinism is an autosomal recessive trait in the clouded salamander (Aneides ferreus). In the main cave population at Oregon Caves National Monument, 100 salamanders are albino while 900 individuals are not (891 AA and 9 Aa). Assume that this popul..
In the oxidative phase of the pentose phosphate pathway, energy is extracted from glucose 6-phosphate to produce NADPH and yield ribose 5-phosphate.
1. Describe an operon, the regulatory proteins, the cellular process and the molecules being "sensed".2. Include details about the orientation of the genes and the promoter/operator sequences or activator binding site.
In this experiment, you will examine the diversity of soil microorganisms by culture bacteria from a soil sample and performing some microbiological tests
Recall Microbiology 1 (Bacteriology), what is the difference between the terms pathogenicity and virulence? Are these terms also applicable in the field of Myco
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