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A protein was purified to homogene-ity. Determination of the mass by gel- filtration chromatography yields 60 kd. Chromatography in the presence of 6 M urea yields a 30- kd species. When the chromatography is repeated in the presence of 6 M urea and 10 mM - mercaptoethanol, a sin-gle molecular species of 15 kd results. Describe the structure of the molecule.
Explain what occurs during the Krebs (citric acid) cycle andelectron transport chain by describing the following.
flooding of coastlal lands, an expansion of populations into northern Canada, Sibieria, and northern China as temperate farmland expands north increasing food production.
For the fish model organism Medaka, genes at 2 loci B, b and R, r determine color of the fish. Estimate the expected phenotypic ratio of offpsring of cross betweena homozygous brown and homozygous white Medaka fish?
Which of the follow was necessary to this confirming experiment. Phosphorus is not present in amino acids in the protein coat of phage.
how are economics related to the formation of prejudice as explained by both the exploitation ands scapegoating theories?
Suppose that in plants, smooth seeds (S) are dominant to wrinkle seeds (s) and tall plants (T) are dominant to short plants (t). A tall plant with smooth seeds was backcrossed to a parent that was short and wrinkle. What proportion of the progeny ..
Why may selfing be selected for in nature yet still be an ‘evolutionary dead end'. How many kilocalories must Janine eat each day to maintain her present body weight.
You are becoming aware of the diversity and abundance of bacteria, and that we always have some uncertainty about the identity of an isolate. Describe the Hershey Chase experiment for determining the hereditary information in a virus?
A beaker with 100 of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100. A student adds 6.60 of a 0.350 solution to the beaker. How much will the pH change? The of a..
The definition of antigen and the chemical characteristics of antigens, The definition of antigen and the chemical characteristics of antigens, haptens and how they become antigenic.
In the fruit fly Drosophila, a rudimentary wing called "vestigial" and dark body color called "ebony" are inherited at independent loci and are recessive to their dominant wild-type counterparts, full wing and gray body color. Dihybrid wild-type m..
Think about a cross between a male who has vitamin D resistant rickets and a female who has fully functional PHEX protein and does not express vitamin D resistant rickets.
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