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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?
A 4.0L sample of hydrogen at 760Torr and 30.0oC contains three times as much hydrogen as does 4.0L of hydrogen at 380Torr and 200.0oC. Prove this statement by using the ideal gas law and comparing the number of moles of each gas.
The performance of a seed can be determined by studying its germination and viability potential.give One of the most significant advances in seed testing.
Exposure to UV light causes pyrimidine dimer formation. The pyrimidine dimer can be repaired by direct reversal and NER. It can also be bypassed by activation of the SOS response.
What changes do these inputs cause (directly or indirectly) in the receiving cell, and how do cells "weigh" these inputs in order to "decide" whether or not to have an action potential?
500 individuals are in a reproductively isolated community. In these individuals 450 are normal for the Tay-Sachs trait. How many of these individuals are probably Aa?
The plot of novelist Rose Darkly's current work in progress, Despair at the Heat Death Cafe, revolves around the production of the "energy currency" of the cells of an alien species. What is one advantage of using E. coli for genetic engineering?
Red-green color blindness in humans is inherited as an X-linked recessive condition. Consider reciprocal crosses between a color-blind parent.
What strategies do other organisms have that allow them to live in environments that are hypertonic to their cytoplasm. What is the pattern in data from Seeley's field experiment.
Provide a genetic explanation for this, including the genotypes of the two original parents, the F1, and a shorthand summary of the F2 genotypes.
In Scandinavia, people who do not have blond hair and blue eyes stand out. A study considered hair and eye color in families from Copenhagen, Denmark. In each of 50 families, one partner has the common blond hair and blue eyes, while the other par..
Maintained by balancing selection, such as heterozygote advantage and frequency-independent selection.
Describe the similarities between electrical activity of a simulated neuron and the fast block to polyspermy that occurs during fertilization in sea urchins.
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