B is correct. Krypton is a noble gas which has a full outer shell of 8 electrons and is generally unreactive because of it.
A glucose molecule is too large to pass through a cell membrane via simple diffusion. Instead, cells assist glucose diffusion through facilitated diffusion and two types of active transport.
So the answer is B
Option 1 is the correct answer
Each bone has a humerus. The ones that have these bones are humans, lions and birds
