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A strain of E. coli contains a mutant tRNALeu. Instead of recognizing the codon 5' CUG 3', as it does in nonmutant cells, the mutant tRNA recognizes the codon 5'GUG3'. A missense mutation of another gene, bug, affecting amino acid number 28 of the Bug protein, is suppressed in cells with the mutant tRNALeu.
What amino acid would be inserted at postion 28 of the mutant polypeptide chain if it is not suppressed?
What amino acid is inserted if the mutation is suppressed?
How are protozoa living in the human bowel different from those that move into the urogenital membranes?
What would be the effect of the same analogue on signal transduction of an epithelial cell after exposure to epidermal growth factor (EGF)? How would this compare to the effects of the cholera toxin on these same cells.
Describe how these two processes are linked between plants and animals based on the reactants and products (water, carbon dioxide, glucose and oxygen) of both pathways.
Create the process of initiation of translation, keeping in mind the molecules needed for translation. What regulates the proper positioning of the ribosome during initiation of translation?
Determine which organ system are msot invovled with homeostasis and discuss the role of SNARE in exocytosis.
Describe the relationship between the amount of O2 consumed and time. Why is it necessary to correct the pea readings with the bead readings?
create a specific experiment to measure the rate of cellular respiration in an organism of your choice
Suppose that you measure the OD of two E.coli cultures: culture A and culture B. The spectrophotometer gives you a reading of 2.2 for culture A and 0.02 for culture B.
There is a hybridization event between two different species with the same chromosome number. The hybrids are sterile. Explain your answer.
The given statements describe SDS-PAGE, a method used to separate proteins. Some of the statements are correct, and some of them are incorrect.
How does sweating help you regulate your body temperature? Why do you feel hotter and more uncomfortable on a hot, humid day than on a hot, dry day?
how to keeping the shape of the cell. But I have found that there is a primary and secondary cell wall - each has their own function - so I am somewhat confused and looking for guidance.
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