What is the appropriate statistical test to use when comparing yield of a protein from a bacteria at different pH?

The yield at a step in the procedure is the amount of target (either total target protein or total activity) at that step divided by the amount of target in the first step (defined as 100%).

The various protein expression systems are bacteria, yeast, insect or mammalian systems. The following factors determine the type of expression system used to produce recombinant proteins: time spent in expressing the protein. ease of handling the expression system.

by using gram negative bacterium eschericia coli (E.coli)

answer: mercury

explanation:

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure  

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.