The plasma membrane is a network of protein, carbohydrates, and lipids that protect the cell from the surrounding environment. The phospholipid bilayer regulates the transport of molecules into and out of the cell. Which characteristics of phospholipids' orientation facilitate their function in the cell? Select all that apply.
A
The inward-facing orientation of non-polar tails allows the bilayer to act as a barrier for charged and polar molecules entering and exiting the cell.

B
The inward-facing orientation of polar tails allows the bilayer to act as a barrier for charged and non-polar molecules entering and exiting the cell.

C
The outward-facing orientation of hydrophobic heads allows interactions between the cell and the aqueous environment.

D
The outward-facing orientation of hydrophilic heads allows interactions between the cell and the aqueous environment.

E
The outward-facing orientation of polar heads allows polar molecules to easily enter and exit the cell.

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.

i'd say that the moon rock is about 2.2 billion years old.

"d.) carbon dioxide and hydrogen sulfide"

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.