Precapillary sphincters will a. cause blood to flow directly from the metarteriole into the postcapillary venule. b. control blood flow into the true capillaries. c. close when the tissue's needs have been met. d. open when the tissue needs nutrients. e. All of the answers are correct.

Option-E

Explanation:

Meta arteriole is a type of vessel present in the micro-circulatory pathway of the human body, which possesses characteristics of both the arteriole and the capillaries.

The structure of metarteriole usually connects the arteriole to the venules and they possess smooth muscle rings at the entrance of the vessel in the capillary and thus acts as a sphincter. This sphincter controls the flow of blood into the venules and capillaries.

The precapillary sphincters are usually closed but when the tissue needs the oxygen the sphincter opens and supplies the blood.

Thus, Option-E is correct.

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.

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.