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Q1. Evaluate the sizes of the different digestive organs of an earthworm. Which organ is the largest? How does its size make it well suited for its function?
Q2. The standard free energy vary for the hydrolysis of ATP is -30.5 kJ/mol. Measurements in rat liver cells indicate that the concentrations for both ATP and ADP are 8 mM and for inorganic phosphate is 1 mM. Calculate the free energy change for this hydrolysis reaction under cellular conditions at 37°C (298°K).
List and express at least three prokaryotic cellular features that might be targeted in this way to inhibit or kill a bacterial pathogen.
While Mexican hairless dogs are crossed with normally haired dogs, about half the pups are hairless and half have hair. While, though, two Mexican hairless dogs are mated, about a third of the pups produced hair, about two thirds are hairless and som..
If the centrioles are mispositioned in the cell, the functional mitotic spindle would fail to form. In this state, how will chromosome segregation be affected . Microtubules will not attach to kinetochores.
Water is most dense and therefore heavier at 4 degrees Centigrade. At zero degrees Centigrade ice forms and can float on liquid water. Assume ice were most dense at zero degrees Centigrade. Select the best explanation of what would happen in aquatic ..
Using the understanding of osmosis describe, why putting salt on a pork chop before cooking it on a grill is probable to result in a dry tough piece of meat.
Explain how this could be considered a negative feedback mechanism. The amino acid residues at the active site are highly hydrophobic. In designing a drug that would bind to the active site and jam it, researchers must use which type of molecule.
Using information provided, what is the hydrogen/helium content inside a star that is the approximate age of our sun. what aspects are consequences of the evolutionary history of animals you are considering.
Drag the labels onto the graph to indicate which presynaptic neuron produced each change in the axon hillock's membrane potential. Assume that the same number of ligand-gated ion channels opens at each synapse.
What fraction of demes in each set is likely to become fixed for allele A1 versus A2. Explain the differences in head movement available to fish.
Which virus caused it? Why was the viral culture completed after the Gram and acid-fast stain results were obtained.
These experiments demonstrated that DNA is the genetic material of phage and that protein does not transmit genetic information. Can this same experiment be carried out with 35S and 14C? Describe it.
If relatively small carbonaceous chondrites from space were a significant source of Earth's original amino acids, then which two of these would have been most important in permitting their organic materials to survive impact with Earth.
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