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).
Overtime is work performed in excess of 8 hrs a day or 40 hrs in a week. A supervisor must approve it in advance. If you are at the GS-10 step 1 or below, compensation for overtime is at one and half times the basic rate of pay.If your rate of pay is above a GS-10 step 1 you will be paid at the basic rate of pay of a GS-10 step 1. You may request compensatory time off in lieu of paid overtime.f you have worked for the Federal Government and have been away for a while or are a current Federal employee, you should also review this information because a number of rules and procedures have changed.