In the vapour diffusion method of protein crystallization, a droplet is allowed to equilibrate with a larger reservoir containing buffers and precipitants. Which of the following is not a constituent of this droplet?

In the vapour diffusion method of protein crystallization, a droplet is allowed to equilibrate with a larger reservoir containing buffers and precipitants. Which of the following is not a constituent of this droplet? Correct Answer Denatured DNA

Denatured DNA is not a constituent of the droplet which is allowed to equilibrate with a larger reservoir containing buffers and precipitants. Purified protein, buffer, and precipitant are all constituents of the droplet.
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The water level in a municipal reservoir has been decreasing steadily during a dry spell, and there is a concern that the drought could continue for another 60 days. The local water company estimates that the consumption rate in the city is approximately 107 L/day. The state conservation service estimates that rainfall and stream drainage into the reservoir coupled with evaporation from the reservoir should yield a net water input rate of 106 exp (-t/100) L/day, where t is the time in days from the beginning of the drought, at which time the reservoir contained an estimated 109 liters of water. Integrate the balance to calculate the reservoir volume at the end of the 60 days of continued drought.
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4. A rise or fall in vapour pressure with no change in temperature will be accompanied by a rise or fall, respectively, in relative humidity
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