What can rapidly pass directly through the phospholipids of the plasma membrane

This is what i did 45-5=4040÷4=10so there are 10 white marbles but am not sure is just a question that am not sure

It's cell theory. easy name i would think.

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11