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Most cellular activities involve converting energy form one form to another. For each of the following cases, give a biological example and explain the significance of the conversion.a) Chemical energy into mechanical energyb) Chemical energy into light energyc) Solar (light) energy into chemical energyd) Chemical energy into electrical energye) Chemical energy into the potential energy of a concentration gradient
As we have discussed in class, individual phylogenetic methods are best suited to particular kinds of troubles. For each of the following data sets, assess the suitability of maximum parsimony to that data set.
Justify the hypothesis of early microorganisms were chemolithotroph and why phototrophic organisms that came after had pigments that absorbed maximally at UV and IR radiation
A mammal uses only one to two percent of its energy in ventilation as a fish must spend about 15 percent of its energy to move water over its gills. Explain this huge difference in their efforts to collect oxygen.
The phosphorylation of ADP to form ATP stores approximately 7.3 kcal per mole o ATP. What is the approximate efficiency of cellular respiration for a "mutant" organism that produces only 29 mole of ATP for every mole of glucose oxidized, rather than ..
Explain the process of prokaryotic replication. Pay particular attention to the early stages. In your work, be sure to include the origin of replication, DnaA, components.
Estimate the isoelectric point for the peptide: glu-asp-arg-asn-ser-asp-glu-his-lys-asp Discuss any assumptions made; exact numerical accuracy is not important - approximations may be used.
Pretend that our class conducted a lab on the population genetics of squirrels in Utah. The class was split into three group and sent to different areas of the state to collect DNA samples.
How do you describe the apparent contradictory finding of spontaneous pain and interference with pain perception in just about the same area.
Why is the frequency of the sickle-cell gene different in North America versus Africa. Now what is your definition of male and female? This is a 26-year-old female with congenital adrenal hyperplasia. What do you say.
Unlike steroid hormones, signaling molecules that are large and/or hydrophilic cannot pass through the cell's plasma membrane and therefore must bind extracellularly to receptor molecules in the plasma membrane.
The cell walls of bacteria, fungi, and plant cells and the extracellular matrix of animal cells are all external to the plasma membrane. Which of the following is a characteristic of all of these extracellular structures.
The mythical Eurasian magnetic pinching beetle is able to manufacture and detect subtle variations in local magnetic fields. Male magnetic pinching beetles provide extensive parental care;
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