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Q1. Scientists are studying bacteria discovered the sea floor. In the absence of light, these bacteria can use organic molecules (including human waste) to generate electricity. NASA hopes they might one day be useful in producing some electricity on a spacecraft. What mode of nutrition do these bacteria probably use?
Q2. A cell biologist cautiously measured the quantity of DNA in grasshopper cells growing in cell culture. Cells examined throughout the G2 phase of the cell cycle contained 200 units of DNA. What would be the quantity of DNA at G1 of the cell cycle in one of the grasshopper daughter cells?
Explain the main types of extracellular signaling.
A student argued that this is too time-consuming as the complete amino acid sequence should be determined in order to create the probe. Does the student have a valid argument? Why or why not with reason.
If you transform bacteria with the plasmid library made in part b above, divide the transformatnts into 20 aliquots and find one has the insert of interest, now how many clones do you need to screen.
Two intracellular molecules A and B are continually synthesised at a constant rate of 1000 per molecule per cell. Each molecule of A survives an average of 100 seconds. While each molecule of B survives an average of 10 seconds.
Blood glucose was monitored weekly for all mice. After five weeks, there was no change in average body weight between groups.
What phenotypes would you expect in the F2, and in what actual numbers (not ratios) would you be expecting to find them. Describe the process of speciation. Comprise in the discussion the factors that can contribute to the maintenance of genetic isol..
What phenotypes will you suppose among the 1024 offspring, and how many of each phenotype would you expect.Suppose that a cross is made between a fly with normal wings.
Describe how one media can identify both the selective and differential nature of the organism. What components of PCRs require to be changed in order to identify genetically modified meats or milk? Generally give details why those changes need to be..
What is the estimated efficiency of cellular respiration for a mutant organism that produces only 29 mole of ATP for every mole of glucose oxidized, sooner than the usual 36-38 moles of ATP.
How many pairs of genes regulating tail length character. Adding of H+ or OH- to a reaction increased its overall rate indicating the rate limiting step was the addition of H+ or OH- to the intermediate. Is this really true? Why or why not.
If there 2000 offspring from this cross, how several of the offspring will you expect to show Ab or aB phenotypes. If the estimated output is 30000 units, which machine must be purchased.
Batch and continuous sterilisation
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