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You serially dilute a stock of bacteriophage by sequentially taking: 10 ul into 1 ml, 10 ul into 1 ml, 100 ul into 0.9 ml and plating 0.1 ml on a sensitive strain of bacteria. You later count 65 plaques on that plate. How many phage per ml were in the original stock?
In the evolution of land plants we see several major trends. Describe how the evolution of seeds decreases a plant's dependency upon water.
Eye color is expressed thrugh two genes A and B. Dark brown eye color, A, is dominant over lighter brown a. Eye pigment, B, is dominant over lack of eye pigment, b.
How does sweating help you regulate your body temperature? Why do you feel hotter and more uncomfortable on a hot, humid day than on a hot, dry day?
A spontaneous reaction occuring at 250K and with a 2.0Kcal decrease in entropy must have which of the following changes in enthalpy?
You are studying a transport molecule. It appears to bind temporarily to the molecule to be transported. During normal transport, no energy is expended.
Assume that you measure the OD of two E.coli cultures: culture A and culture B. The spectrophotometer gives you a reading of 3.2 for culture A and 0.01 for culture B. What would you do to determine the concentration of culture A and B and why? Giv..
Assume you have a stock solution with a concentration of 722g/L. You want to make one liter of solution with a concentration of 39g/L.
Calculate the Ki for a competitive inhibitor (I) form the following data by Dixon Plot.
There are two different species of single-cell organisms living in the same environment. The two are identical except that the members of one species are four times larger than the other species.
Assume you had supply of nucleotides made with atoms that were twice as heavy as normal, and you permitted some cells to replicate their dna once, using only heavy nucleotides.
Describe the characteristics of midlatitude cyclones and anticyclones in the Northern and Southern Hemispheres. Include weather characteristics, pressure patterns (high or low) and wind patterns (converging or divergent; clockwise or counterclockw..
How will each of these components be digested? Where within the digestive system will they be digested? Are any accessory organs involved.
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