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It's a long way from sunlight to electric light, but the path can be followed. List a possible sequence of events and describe the energy transformations that take place between the sun's light hitting the earth and the light reaching you from an electric light bulb. Assume that the electricity is generated in a gas-fired electrical station.
How do glucagon and epinephrine block fatty acid biosynthesis? How does insulin activate fatty acid biosynthesis? How does the chain undergo further lengthening after 16 carbons? Where in the cell does this occur? Specifically describe the enzyme ..
A cross is made between 2 E. coli strains: Hfr arg+ bio+ leu+ (x) F- arg- bio- leu-. Interuppted mating studies show that arg+ enteres the recipient last, so arg+ recombinants are selected on a medium containing bio and leu only.
The SalI restriction site in box is polymorphic. Geese with a functional alchemase gene secrete gold into egg white when they are fed a diet rich in lead.
Explain why a deficiency either of vitamin B12 or of folate causes red blood cells to be larger than normal.
What is the trend in the number of valence electrons as you move down a group? Across a period?
Estimate the sequence of hexapeptide on the basis of the following data. When the sequence is not known, a comma separates the amino acids.
In our experiment, we had 2.0 mM solution and we diluted different volumes of it into sodium carbonate before reading in the spec. These were our dilutions.
Membranes are essential components of both prokaryotic and eukaryotic cells. Identify three molecules or types of molecules that are components of the plasma membrane in eukaryotic cells. Discuss the structure and function of one of these componen..
Crossover events may occur between two loci but are undetected due to a double-crossover event. Explain what a double crossover is and how they might cause problems for geneticists. How many types of double crossovers are possible between two dihy..
The Triton Lysis Buffer (TLB) you used to extract the cells in this experiment contains pepstatin, antipain and leupeptin (PAL). Why are these included in the lysis buffer?
What impact will the loss of land plants have on the soil? increased nutrient levels decreased soil stability decreased surface temperature ncreased biodiversity of soil-dwelling invertebrates.
explain How will the net charge of a typical protein change.The table below indicates approximate values for these at 25C. For reference, the delta H(ionization) for Tris is 47kJ/mole.
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