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You make some RNA in vitro by adding some NTPs into a tube. You want to reproduce some of the work that led to an understanding of how the genetic code works. You mix two nucleotides together in a 3C to 1G ratio.
a) List all the codons that could be found in your RNA and the relative proportions of each.
b) If you added the RNA you have made to an in vitro translation system, what amino acids could be found in the resulting proteins and in what proportions?
You are studying a transport molecule. It appears to bind temporarily to the molecule to be transported. During normal transport, no energy is expended.
Phenylketonuria is a recessive metabolic disease caused by the absence of the enzyme phenylalanine hydroxylase. What is the phenotype of the disease, and what causes the phenotype to develop?
Benzyl penicillin is absorbed from the human digestive tract by a H+/penicillin symporter that cotransports these 2 species in a 1:1 ratio from the intestinal lumen into the brush border epithelial cells.
As the polar ice shirinks with rising global temperatures, brown bears are expanding their range into the historical distribution of their close relative, the polar bear. Could this shift be explained by foraging strategy? If so, how?
what are the results of the dry vs. Moist Heat Demonstraation in terms of killing microorganisms?
If an organism has a diploid number of 16, how many chromatids are visible at the end of mitotic prophase?
Given blood spatter patterns, is possible to estimate the direction the blood was traveling, angle of impact, and the point.
A nearsighted woman (Nn) with hazel eyes (Hh) marries the man with normal vision and hazel eyes (Hh). Their three children all have blue eyes and normal vision. What is the possibility that their next child will have blue eyes and be nearsight.
Assume you are working to characterize a novel protein in mice. Analysis shows that high levels of the primary RNA transcript that codes for the protein are found in tissue from the brain.
Identify whether transcription of the lac operon would be ON or OFF under the conditions listed below, for the following mutant strains of E. coli.
In cattle some are brown some are white and others are spotted. Both brown and white are dominant. Cross a spotted bull with a white cow. What are the expected offspring fractions?
If the experimental animals in the chamber were engaged in physical activity (such as running in a wheel), how do you think this would change results of the metabolism experiment. What changes would you expect to see in the fluid levels of manometer.
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