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A solution containing 80% cytosine and 20% uracil was used to make synthetic RNAs. A bacterial cell free system produced proteins using these mRNAs in the following proportions:
a) 4 times as many serine as leucine residues.
b) 16 times as many serine residues as phenylalanine residues.
c) 16 times as many proline residues to leucine residues.
Identify the amino acids formed.
Activation of T cells requires that antigens be presented from antigen-presenting cells, not simply by exposure to the antigen in solution. What biological rationale may underlie this requirement - consider both from the perspective of how this can a..
What must the intracellular 3-phosphoglycerate/1, 3-diphosphoglycerate ratio be to make the phosphoglycerate kinase reaction thermodynamically favourable in the direction of 1, 3-diphosphoglycerate synthesis.
A drug impairs oxyegen consumption on liver mitochondria at a buffer of 7.4pH, Mg, and adp. It inhibits O2 uptake if isocitrate, 2-ketoglutarate and malate were substrates, but it will NOT is succinate is a substrate.
Which is the ratio of dividing cells to the total number of cells in the sample. Scientists frequently calculate mitotic index to evaluate the growth rates of different types of tissue. Which type of tissue would have a higher mitotic index, normal t..
GTP is again added to the redissolved pellet proteins, and the solution is again warmed for a few minutes. Then centrifugation at similar speed described above is again performed. This process is repeated several times.
Mary is in an automobile accident and injures her spinal cord. She has lost feeling in her right hand and her doctor tells her it is the result of swelling compressing a portion of her spinal cord. Which part of her cord is possible to be compressed.
What is the difference between heterosporous and homosporous plants? What two types of spores do heterosporous plants produce? Spores that will develop into a female gametophyte are.
In humans, a dimple in the chin is a single gene, autosomal dominant characteristic. A man with the dimpled chin, whose mother lacked dimpled chin.
What is the possibility that differences this great between observed and expected values would happen by chance. Two genes organize in corn snakes as follows: O-B is brown snakes, O-bb are orange, oo bb are albino. An orange snake was mated to a blac..
Explain the epidemiological attributes of this episode. In which special circumstances can cross-sectional surveys be utilized to test the hypotheses? In your answer explain briefly the characteristics of the cross-sectional study.
After much persuasion, Vanessa has finally consented to go away for a romantic weekend at a seaside resort where Eric has promised to "teach her about sex." Vanessa is both increasingly anxious about the coming weekend and enjoying fantasies of being..
Recently, use of cleaner fuels has greatly reduced soot in the landscape, and dark-coloured moths have been disappearing. Should the two forms of moths be considered separate species.
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