Center lane.
Center line
This is purely an opinion question. It's like asking which supermarket checkout line you should choose. You can choose any traffic lane you wish so long as it is not a marked HOV lane.
1/2 a mile.
Yes
No.
Cell membranes
Get on the brake ;)
"Adiabatic"
The vehicle exiting the parking space that did not yield to oncoming traffic.
No one. The air is toxic and out to get you. It's the government man.
A blockade.
Muscle requires glucose, and so there is not the same concentration of glucose in blood entering and exiting a muscle. The exiting blood will be lower in glucose.