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Question: Explain why does depletion of Ca2+ from the medium by chelating agents promote isolation of cells from epithelial tissues during primary cell culture?
A) Given the following amounts added to make 500ml of a given solution, what are the final concentrations.
2.5 ml of 2M Tris, pH 7.5
4.4 grams of NaCl (MW=58.44)
500ul of 100% Tween-20
B) How much would be required to make 4 liters of the same solution.
Means of transport would most probable be used for moving a medium-sized molecule (like a monosaccharide or an amino acid) from a low concentration on the outside of a cell to a high concentration on the inside of a cell.
What is involved in going from genomic DNA to messenger RNA (mRNA)? The transciption process involves the concerted action of several proteins called transcription factors which method the DNA in a multi-step process into mRNA.
A cross is made between tall, red flowered plants and short, white flowered plants. Tall and red are dominant traits. Determine what the expected phenotypic ratios of the f1 and f2 generations should be.
What is the difference between molecular motion and diffusion?is it extremely small to demonstrate brownian movement.
Blood glucose was monitored weekly for all mice. After five weeks, there was no change in average body weight between groups.
Determine what kind of receptores are norepinephrine, epinephrine and phenylephrine? Are they slective or non-selective, alpha 1 or 2, beta 1 or 2.
Important functions of skeletal system involve: protection of the brain and soft organs. storage of water. production of Vitamin E.
What is the possibility that - if they have a daughter - the daughter will be red-green colorblind. How several are born of each genotype.
You get a soil sample and run an enrichment culture on it. You give the organisms in the culture with all of the ingredients required for growth except for nitrogen. What result do you expect to have at the end of the experiment.
A fish on the outside of a school swims inward, leaving other fish on the edge. These new "edge" fish then move inward and the cycle repeats.
NASA hopes they may one day be useful in producing some electricity on a spacecraft. What mode of nutrition do these bacteria most likely use.
Perform a BLAST search and a result has an E value of about 1 x 10-4. What does this E value mean? What are some parameters on which an E value depends?
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