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In a cell biology laboratory experiment, two students independentlyisolated the enzyme lactate dehydrogenase, which catalyzes thereduction of pyruvate to lactate, from chicken heart. The enzymewas obtained in the form of a concentrated solution. The studentsthen measured the activity of their own enzyme solution as afunction of substrate concentration under identical conditions andfrom the data determined the Vmax and KM of their own preparation.When they compared results, they noticed that their values of KMwere identical, but their values of Vmax were radically different.One student argued that the different Vmax values confirmed thatthey had isolated different forms of the same enzyme. The otherstudent argued that, in spite of different Vmax values, they hadisolated the same form of the enzyme.
(a) Which student was correct? Why? (be explicit - useequations)
(b) How might they resolve the discrepancy?
Belding's ground squirrels live in colonies. One of the advantages of living in a colony is that predation is decreased because individual squirrels will give alarm calls when a predator approaches the colony. Explain why this behavior of giving a..
A color-blind woman marries a man with the normal color vision. They have ten children, six boys and four girls. How many have normal vision? How many are color- blind?
Mycoplasmas are the simplest self-replicating (free-living) bacterium known. The Mycoplasma genitalium genome is 580,000 bases in length. Approximately how many genes does this bacterial genome encode.
Explain why random union of male and female gametes is necessary for Medelian segregation and independent assortment to occur.
Describe the benefits of delaying sexual activity until individuals are older. Describe benefits of exercise for weight loss and weight maintenance.
What is t-cell mediated suppression? I have been trying to read about it and understand what it is.. but everything I read it doesn't really make sense to me.... and what mechanisms are involved in t cell mediated suppression?
Discuss how would a disease or disorder that interferes with acetylcholine receptors at neuromuscular junction affect muscle strength?
Explain the experiments, their expected results, and your conclusions. You may suppose that you have an unlimited budget and an Institutional Review Board with very strict guidelines for research in humans.
Which of the following would not be stimulated by neurons originating in the hypothalamus.
What are the 4 major layers of the atmosphere? Describe each one in terms of temperature, height, activities, and composition.
Compute the changes in Na+ due to an action potential. In other words, by what factor does the [Na+]I change because of an action potential firing?
What is the expected frequency of the AB haplotype if the frequency of the A allele at locus 1 is symbolized as p and the frequency of the B allele at locus 2 is symbolized as r?
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