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DNA damage brought on by a variety of natural and artificial agents elicits a wide variety of cellular responses involving numerous signaling pathways. In addition to the activation of DNA repair mechanisms, there can be activation of pathways leading to apoptosis (programmed cell death) and cell-cycle arrest. Why would apoptosis and cell-cycle arrest often be a part of cellular response to DNA damage?
The DNA molecule is made up of two strands -- each of which is a sequence of sugar and phosphate molecules linked by covalent bonds. The two chains are held together by much weaker hydrogen bonds between bases on opposite chains.
Question: Assume you are working at a corporation that makes poly(ethylene terepthalate) in a batch-type processing. This process requires 2.7kg of ethylene glycol reacted with 9.6kg of terepthalic acid to make the polymer.
given = enzyme concentration = 37.09 time to float disc (in seconds) trail one =37.09 trail two=48.19 trail three 37.09 sum = 126.47 mean = 42.15 how do we calculate the rate? how do we draw the reactionrate verses enzymecocentration graph?
Draw a flow diagram (ie pictures with concise labels) for the experimental protocol tobe following in an experiment for the Transforming principal.
Gas gangrene is caused by the highly pathogenic bacterium, Clostridium perfringens. This bacterium destroys animal tissue structure by producing an efficient protease that cleaves sequences of X-gly-pro-Y.
A spontaneous reaction occuring at 250K and with a 2.0Kcal decrease in entropy must have which of the following changes in enthalpy?
What are the various tradeoffs associated with chucking in male tungara frogs?
Was evolutionary pressure that contributed to the echinoderm nervous system development likely due to selection for those animals capable of forward locomotion?
Determine what genotype frequencies would you expect to see in the next generation if there is no evolution.
which statements about the sodium-potassium pump is true.
What would be the effect of the same analogue on signal transduction of an epithelial cell after exposure to epidermal growth factor (EGF)? How would this compare to the effects of the cholera toxin on these same cells.
What were the contributions of Nestorian Christians, Muslims, and Jews to Medieval Science?
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