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1. Explain the four categories of amino acid side chains. What types of interactions are the members of each of these categories likely to make?
2. Outline the four levels of protein structure, giving a specific example of each.
3. Describe the geometric features of the common secondary structure, the ? helix. Why is this structure especially common? What are the weak bonds that stabilize the ? helix?
4. You treat a protein with the denaturant urea. For each interaction or bond below, state if the interaction or bond is disrupted by the urea treatment.
2
a. Ionic bonds
b. Hydrogen bonds
c. Disulfide binds
d. Peptide bonds
e. van der Waals interactions
5. How does denaturation affect a protein’s primary, secondary, tertiary, and quaternary structures?
6. Describe the role of water in protein structure formation.
In this case, we are tracking an enzyme secreted by pancreatic cells. What is its most possible pathway. Find out how many calories you will have saved by eating this reduced-fat product instead of the high-fat one.
Assuming that genotype essential to produce flat tails is homozygous recessive (such as bb) compute the frequency of the b allele in the squirrel population to two decimal places.
A new enzyme you are studying has a Km of 7.0mM and a kcat of 126 per second. What will be the initial rate of reaction in units mM/min when 9.3 nanometer enzyme is reacted with 2.7 mM substrate. Report your answer in units if mM/min to nearest 1m..
Point out similarities and differences in their scientific foundation. What is the mainly abundant cell type? Which is the slightest prevalent.
In a study of intraspecific aggression, an experimenter finds that 16 out of 23 animals tested in species A exhibit aggression, while only 6 of 25 are aggressive in species B.
DNA sequences are used quite often to evolutionary relationships between species. Explain why is the DNA sequence of one gene a less accurate indicator of the evolutionary.
how Enzymes provide energy for the reactions they catalyze
Determine hat will happen to the distribution of estuarine freshwater organisms if the building of a dam upstream reduces the flow of freshwater into the estuary?
Lipid metabolites are often seen as key elements in cellular signaling. Is this unique? Please provide several examples of the function of lipids as key elements in signal arrays and list the biologic functions these signals affect?
why the average person secretes about 2.5 litres. where C2 is the greater concentration. If the process of pumping H+ ions is 20% efficient, how many moles of ATP are used each day to secrete gastric juice? How many kilograms could be lifted one me..
Two species of garter snakes live in the same geographic area. One generally lives in water and the other mainly on land, so that they rarely encounter each other and do not interbreed. This is an example of what category of genetic isolation.
The external faces of some of the proteins in the plasma membrane have carbohydrate groups attached to them.What role do such "sugar-coated" proteins play.
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