Which amino acid is one that is targeted for phosphorylation to modulate the activity of an enzyme?

Explanation:

Serine threonine, tyrosine in eukaryotes and also histidine in prokaryotes and plants are the most typically phosphorylated amino acids (though it is now known to be common in humans). These phosphorylations have crucial and well defined functions in the pathways of signalling and metabolism.

Phosphorylation is the most frequent process of protein function regulation and cellular signal transmission. While phosphorylation in bacterial proteins has been seen, in eukaryotic cells it is far more prevalent.

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.

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.