Yes
Cell membranes
The cell membrane supervises the substances entering and exiting the cell. It is selectively permeable and regulates the passage of molecules in and out of the cell through active or passive transport mechanisms.
A closed system is designed to keep additional atoms from entering or exiting. An insulated system prevents heat from entering or exiting.
No.
Channel proteins in cellular transport serve as passageways for specific molecules to move in and out of the cell, allowing for the regulation of substances entering and exiting the cell.
Get on the brake ;)
The vehicle exiting the parking space that did not yield to oncoming traffic.
After exiting the nucleus, mRNA travels to the ribosomes in the cytoplasm where it is used as a template for protein synthesis.
No one. The air is toxic and out to get you. It's the government man.
A blockade.
When entering and exiting a roundabout, you must always yield to traffic already in the roundabout. This means checking for vehicles approaching from your left and ensuring the way is clear before merging in. Additionally, use your turn signals to indicate your intentions when exiting to inform other drivers of your movement. Always adhere to any posted signs or markings for safe navigation.
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.