Why is it important that globular proteins are hydrophilic?

The globular protein is hydrophilic in nature because they exert their function moving through the blood stream.

Explanation:

Hemoglobin,myoglobin,insulin are globular protein which help them to interacts directly with blood.

     For example Hemoglobin is an important element of red blood cell helps to carry O2 and CO2 to and from the body.To exert this function is hemoglobin interacts with O2 and CO2 to be moved by blood stream to their target site.