Estimate the size of a water molecule starting from its density with short preci

Question

Estimate the size of a water molecule starting from its density with short precise explanations. Write an equation for a Gaussian. Give 3 examples of measurements you expect a Gauss distribution and 3 for non-Gaussian. Estimate the speed of any particular gas molecule travelling in air at room temperature. True or false with short explanation: Raising temperature will favour protein folding. Pollen movement due to diffusion will be insensitive to temperature. A linear concentration profile with positive slope has no change in concentration at any point over time. By increasing the number of cells observed, the distribution of proteins/cell in a population of cells will become Gaussian from a Binomial. eV is an unit for energy.

Explanation / Answer

a. Raising temperature will favour protein folding - False

Increasing temperature will favour protein unfolding due to the denaturation of sidechain bonds and hydrogen bonds.

b. Pollen movement due to diffusion will be insensitive to temperature - False

Temperature affects brownian movement, and hence also pollen movement due to diffusion.

c. A linear concentration profile with positive slope has no change in concentration at any point over time - True

Because the rate of entry and exit of ions from a channel remains identical.

d. By increasing the number of cells observed, the distribution of proteins/cell in a population of cells will become Gaussian from a Binomial - True

e. eV is an unit of energy - True

It is equal to 160 zeptojoules

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