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Hydrogen peroxide decomposes to water and oxygen. Discuss the molecular mechanisms behind the difference in rates or activation energy of the uncatalyzed reaction, the reaction catalyzed by ferric ions, and the reaction catalyzed by the enzyme catalase. Why is the activation energy barrier essential for life as we know it? Why is it an advantage to the cell that enzymes that generate as well as break down hydrogen peroxide (catalase) are compartmentalized within the membrane-bound peroxisome?
The following information were obtained in a chemostat for the growth of E. aerogenes on aglycerol-limited growth medium.
Discuss how do use the factor-label method to calculate the number of grams of KMnO4 that you would need to make 100 ml of a 0.0045 M potassium permanganate solution?
In plant communities today, leaf morphology is correlated with mean annual temperature, so paleobotanists use fossil leaf morphology to estimate the mean annual temperature of paleoclimates.
A sample was diluted by placing a 0.1mL aliquot into 0.9 mL of diluent, and 100 microliters of this dilution was spread-plated. After incubation, 267 colonies appeared. What is the CFU/mL in the original specimen?
Blebbistatin is a newly identified small molecule inhibitor of myosin heavy chain. It binds to myosin-ADP-Pi complex with high affinity. What step of cross bridge function is affected?
Why might there be a difference of an antimicrobial agent on a gram positive organism verses a gram nrgative organism?
How does real time PCR work to quantify the initial amount of the DNA template? How should the method be modified to quantify the initial amount of RNA template extracted from tissue or cells?
The human body is truly remarkable and is designed to function effectively. Organs are important structures composed of different tissues that facilitate specific functions within the body.
Draw the response of the post-synaptic cell to three stimuli of different intensity (gentle, medium, and intense). Be sure to label all axes.
Your colleague Prof. Kerfuffle is using molecular analysis of the actin gene to estimate when the human and chimpanzee species diverged.
June is developing new strains of horticultural plants, and she wants to check the chromosome numbers of her specimens. What would be the chromosome composition of the petal, pollen, and megaspore?
In a chemical reaction the free energy change (/\Go') is -40 jk/mol and the entropy factor T/\S is 15 kj/mol. the enthalpy change /\H for the reaction is
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