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Mitochondria carrying out oxidative phosphorylation consume oxygen. a) What happens to oxygen in mitochondria? b) Describe the effect of an uncoupling agent such as 2,4-dinitrophenol on the rate of oxygen consumption. Assume there is a sufficient supply of oxidizable substrate, ADP, and Pi. c) It was observed that if a mitochondrial ATP synthesis inhibitor "compound X" is added to the cell, the NAD+/NADH ratio decreases. Would you expect compound X to be an uncoupling agent or an inhibitor of respiratory electron transfer? Explain briefly.
Explain the changes in ventilation that occur during exercise. How are these changes produced and how do they affect artrial blood gases and pH?
How many RNA polymerases are present in ALL eukaryotes?
During exercise does the sympathetic nerve activity increase or decrease. What does the parasympathetic nerve activity do?
What is the gene order? What are map distances in recombination units?
Think about the two separate experiments. In the first experiment, a DNA strand containing a+ b+ genes were placed in a culture of bacteria with a- b- genes.
How will chronic Hepatitis C impact a female's reproductive system? Discuss sex hormone levels, hypothalamic-pituitary axis changes, fertility and menstruation changes.
Describe how a failure to modify an amino acid or amino acids in a protein or proteins may be involved in a person's non insulin dependent diabetes mellitus.
Determine the principal reaction that makes an organic, nitrogen containing molecule, capturing the nitrogen in ammonia created through nitrogen fixation.
Assume you have made several dilutions of p nitrophenol and are reading the absorbance of each sample on a spectrophotometer.
What is natural selection, how does it work, and how does it compare to artificial selection?
Discuss how does column chromatography separate molecules such as DNA and RNA? Explain whyis it difficult to separate large amounts of RNA and DNA using gel electrophoresis?
Define a genetic mutation and state the types of genetic mutations. Discuss the effects of genetic mutations.
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