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What are the Principles of pipette?

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Related questions

You perform a serial dilution starting with a culture containing2,500,000 organisms/ml.

First dilution - pipette 1 ml of culture into 4 ml of water
Second dilution - pipette 1 ml of first dilution into another 99 mlof water
Third dilution - pipette 1 ml of the second dilution into 9 ml ofwater.

What is the total dilution at each step?
What is the number of organisms/ml at each step?

Please Help
Thank You In Advance

You have a2.5 mg/ml solution of an amino acid (with molecular weight = 100).You are required to add 0.5 umoles to a test tube. how muchwould you pipette?

For plant physiology lab- Pressure bomb, mass and bubble potometer.

a. If Plant A exhibits greater water tension than Plant B as measured by a pressure bomb, which plant has the more negative leaf water potential, and how could you tell?

b. Imagine if, after setting up your potometer you used a blowtorch to seal the end of the pipette trapping the air bubble inside . During transpiration. what would you expect to observe in the sealed pipette over time, and how could such a setup be used to estimate the actual tension and therefore water potential of the plant in MPa?

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