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Question: Enzymes are typically needed to catalyze reactions that would be very unlikely to occur on their own. Imagine that the activation energy, Ea, for the uncatalyzed cheese reaction at 20C is 18kcal/mol. This reaction could then be catalyzed by colloidial platinum Ea= 13kcal/mol or by the enzyme renin Ea=7kcal/mol. Draw an activation energy diagram for this reaction under catalyzed and uncatalyzed conditions, and explain what means for the activation energy to be lowered from 18 to 13 kcal/mol by platinum, but from 18 to 7kcal/mol with rennin.
Estimate the proportion of various phenotypes in matings between individuals that are blood type AB and type O, both of whom are Se/se.
Comb shape in chickens represents a classic example of gene interaction. 2-gene pairs interact to influence shape of the comb. The genes for rose com and pea comb together produce walnut comb.
Destroying the Trojan horse. Penicillin is hydrolyzed and thereby rendered inactive by penicillinase, an enzyme present in some resistant bacteria.
Compute the change in allele frequency under the island continent model for gene flow under the follwing conditions
Assume you have a protein solution of concentration 3 M. You require to make a series of six dilutions of 300 mM, 30 mM, 3 mM, 300 mu M, 30 mu M, and 3 mu M.
Assume if neurons are exposed to a chemical agent that prevents the NA + channels from opening, what would happen to the neuron? What would happen if the K + channels were inhibited?
A patient displays the enlargement of lateral and third ventricles, however no enlargement of fourth ventricle. Explain what do you conclude? At the time of a spinal tap of the patient, blood is discovered within the CSF. What does this finding pro..
The seeds of orchids are among the smallest known, with virtually no endosperm and with miniscule seed leaves. As a result, what must one expect to be true of such seeds.
Does Chinese crocodile lizard communicate are these animals endangered or threatened if yes why are there number decreasing or is there population stable.
how Enzymes provide energy for the reactions they catalyze
Although physiologically distinct, chemolithotrophs and chemoorganotrophs share a number of features with respect to the production of ATP.
Discuss how does the concept of natural selection explain variations in species descended from a common ancestor?
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