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1) You are having a 2.5 mg/ml solution of an amino acid ( mol.wt. = 100). You are need to add the 0.5 µmoles into a test tube. Specify the amount you would pipette?
2) You require a 10mM solution of the potent (and dangerous) transcription inhibitor (mol.wt.500) to do an experiment. To prevent the handling of powder form of this compound you choose to make up the whole bottle instead of attempting to weigh out the portion. The compound is available in the 200 mg batches. Specify the volume you would add to one of these bottles in order to make up a 10 mM solution?
If a cube representing the cell is 5um on a side, compute the surface area to volume ratio, and explain why this is or is not a good size for a cell.
How, at what time the shoot tip touched the other plant's stem did the shoot switch from growing straight to growing in a spiral? Write down a hypothesis first.
What are the three main ions that play a role in the equilibrium membrane potential. What ion drives the potential, and why. What kinds of functions might these shared genes have.
Suppose you have a light chain genome with 64V regions and 8J regions. If you had repeated attempts at recombination, how many dissimilar attempts would be made when the middle region of both V and J is the segment chosen at each recombination.
Which of the criticisms would be addressed by using a swan-necked flask instead of the unsealed flask. Develop a hypothesis to consider how a decrease in precipitation on Darwin Island might affect beak size and develop a hypothesis to explain how a ..
In an experiment you are studying a neuron that receives synaptic inputs from two other neurons: one from neuron A and one from neuron B. Illustrate a separate graph for each value of Vm.
Which declaration is NOT true about DNA replication. Replication can only begin at distinct regions known as origins of replication.
What chemical property of the leucine residues thought to form tight ring that prevents the passage of ions within the channel of the acetylcoline receptor suits them for this role.
Choose two organelles and compare them relative to structure and function. Describe what would be the specific probable effects on the cell if each of these organelles were lost.
What must the intracellular 3-phosphoglycerate/1, 3-diphosphoglycerate ratio be to make the phosphoglycerate kinase reaction thermodynamically favourable in the direction of 1, 3-diphosphoglycerate synthesis.
Though plants, fungi, and prokaryotes all have cell walls, we classify them under different taxonomic units. Which of the observations below comes closest to explaining the basis for placing these organisms in different taxa.
What F1 phenotypic and genotypic ratios are formed from this cross . how may this affect the rate of protein synthesis.
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