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p53 is a tumor-suppressor gene that is involved in 50% of all cancers. What is its normal function in cells? A.It activates cell growth B.It activates cell death C.It activates DNA repair D.b and c E.a and b Please explain how you got your answer.
Demonstrate that the overall process is equivalent to an isothermal expansion of the gas at T from V to 3V, where V is the original volume and Derive an express for dS for the overall process.
Determine when glucagon binds its receptor there is an increase in the second messenger, cAMP. cAMP levels can be reduce by which of the following enzymes?
Assume you are an ecologist studying the effects of acid precipitation on plant life. Explain an experiment you would perform in order to determine which plant species will be a useful indicator species for acid rain pollution.
Explain Why does FADH2 have a yield of two ATP via the electron chain, but NADH yields three ATP?
What are some traditional and modern fertility control mechanisms for humans? What accounts for increasing population size when fertility rates are declining? What are pro-natalist pressures and factors that reduce family size?
Muscle cells, while an individual is exercising heavily and at what time the muscle becomes oxygen deprived, convert pyruvate to lactate. What happens to the lactate in skeletal muscle cells.
explain the concept of homologous structures in evolution. draw the skeletal forelimb of the horse. take care to describe how these bones have been modified to better suit the needs of this animal.
Lysosomes are single membrane-enclosed, 0.2-0.5 m diameter spherical vesicles inside the cytosol of eukaryotic cells. Estimate the concentration of H+ inside lysosomes.
Today we can determine the genetic makeup of individuals and determine whether they carry traits that are potentially harmful such as huntington's disease knowing this.
What would be the biological advantage for organisms/cells that have alternative energy pathways such as fermentation?
Can viruses evolve? Why or why not? a. No, only their hosts can evolve. b. Yes, their genetic make-up responds to natural selection. c. No, they are not alive. d. Yes, they are able to alter their genetic code directly in response to selection pre..
In the evolution of land plants we see several major trends. Describe how the evolution of seeds decreases a plant's dependency upon water.
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