Polar molecules have trouble passing through the nonpolar part of the phospholipid bilayer. Ions require ion channels and is not as easy as those that simply just diffuse through the membrane. Ion channels might require energy, too... Not glucose because those are larger molecules.
Overtime is the amount of time someone works beyond normal working hours. Normal hours may be determined in several ways: 1  by custom (what is considered healthy or reasonable by society), 2  by practices of a given trade or profession, 3  by legislation,hus, an employee might work 48 hours in one week, and 32 hours the next week (assuming over 40 hours is overtime), and be paid an extra amount equivalent to 4 hours work (8 multiplied by 0.5).
Comp Time, or Compensatory Time, is an alternate way of rewarding overtime work. Instead of paying an hourly employee time-and-a-half for work done over the time allotted in the normal work week, employers would allow an hour and a half of time off for each hour of overtime worked.ompensatory time off can also be approved for a prevailing rate employee, as defined in the United States Code, but there is no authority to require that any prevailing rate (wage) employee be compensated for irregular or occasional overtime work by granting compensatory time off.