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In certain organisms, exposure to a toxin leads to resistance as a result of mutation of the toxin receptor. At the same time, reproductive ability is lost. Explain how a change in the expression of a gene for a toxin receptor could also affect expression of a gene needed for reproduction.
A DNA polymerase can synthesize the DNA at a rate 300bp/min and can introduce error 2bp/400bp.If this DNA polymerase is used in a PCR reaction to amplify gene of 4000bp,calculate number of errors.
You have isolated a new protease that cleaves peptide bonds following Asp and Glu. Based on its inactivation by DIPF, you suspect that it may utilize a mechanism similar to chymotrypsin.
If all other variables remain constant, when 2-action potentials enter synaptic terminal and produce pair of EPSPs in the muscle fiber, larger EPSP is produce by the secretion of:
If a cell is maintaining 200 proteins with an average AA length of 75 AA what is the total number of bases used to encode specifically for the proteins?
n beans yellow (Y) is dominant to green (y) and smooth (S) is dominant to wrinkled (s). What are the possible genotypes for the offspring of the following cross: YySS and YYSs.
How is it that different cells can respond in different ways to exactly the same signaling molecule even when they have identical receptors?
Use a flow chart or numbered list, trace the path of a water molecule through a plant. Begin with a water molecule in the soil and end with the water molecule as water vapor in the air.
what is the ploidy of the spores produced by sporangiospore and to what will these spores give rise?
Explain the structure and functions of keratin. Does every layer of the epidermic contain keratin? Why or why not? Please provide a justification for your answer.
what is the turnover number for carbonic anhydrase.
define how the axonal membrane potential is restored. Describe how resting ionic distributions are maintained.
Discuss the effect of discharging primary-treated sewage on the biochemical oxygen demand (BOD) and dissolved O2 of the receiving body of water?
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