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G-protein-linked receptors activate G proteins by reducing the strength of GDP binding. This results in rapid dissociation of abound GDP, which is then replaced by GTP, which is present in the cytosol in much higher concentrations than GDP. What consequences would result from a mutation in the alpha subunit of the G protein that caused its affinity for GDP to be reduced without significantly changing its affinity for GTP? Compare the effects of this mutation with the effects of the cholera toxin.
E. coli is being grown to a maximum cell density of 140 grams dry cell weight per liter in a bioreactor fitted with a flat blade turbines agitation system.
If a myofibril were pulled so that the sarcomeres increased in length by approximately 50 percent, what effect would you expect this to have on the contractile ability of the myofibril? Why? What effects would this have on the H, A, and I bands?
How various of each possible phenotype. A locus in Australian Bearded Dragons is involved in the production of pigment. When heterozygous parents mate, 75% of the progeny are colored and the rest are albino.
In another population of butterflies, you do a survey and find that out of 5000 individuals you examine, only 4 had curly antennae. What would you expect the frequency of heterozygotes to be in this population? What about the frequency of homozygo..
Which of the following is not a means of decreasing stroke volume? A. loss of 3 pints of blood B.allergic reaction to a bee sting C.increasing aldosterone secretion D.dehydration E.severe vomiting
Reduction often is referred to as the addition of hydrogens to a compound. It is more chemically correct to refer to reduction as the addition of electrons.
Few decades ago, most population geneticists believed that populations are genetically uniform, except for rare deleterious mutations.
Write an equation for ethyl acetate from ehyl alcohol, acetic acid, and concentrated sulfuric acid to illustrate the formation of the ester.
Determine the phases of an action potiental and what channels open/close, what causes them to open/close, what ion moves, and in which direction do the ions go?
How may this capacity be an advantage to the cell.
What is hematocrit? If the hematocrit decreased from the normal range, and would this decreased potentially dangerous?
Reactant X participates in the reaction X ? Y + Z. Two experiments were performed to determine the rate of the reaction with 0.200 M and 0.400 M of reactant X.
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