The polar head of a phospholipid is made of phosphate. The polar head has a negative charge that is made up of phosphate molecules. This polar region attracts water and is positioned outward to interact with the water.
I hope this helps!
Answer:
Acid
Explanation:
Because water is neutral and has a pH level of 7, and anything below 7 on a pH scale is acidic, solute X is an acid because it lowered the pH level.
Answer:
Transgression is a geological event in which the sea level rises relative to the land, therefore I'd assume the answer would be A, a change in the quantity of ocean water.
Explanation:
I took the test on edge, feel free to correct me if I'm wrong :)
Category 5 is the correct answer
Answer:
I am assuming the question is asking how do the processes relate to one another.
Explanation:
Ventilation happens in the lungs, where carbon dioxide and oxygen are exchanged in the alveoli. This is done via cappilaries that surround the alveoli. Cappilaries are small blood vessels, which are collecitelvy part of the blood flow system (circulation) of the body. In reguards to the digestion, there are capillaries in the vili (which are tiny finger-like structures) so that they can pick up the nutrients during digestion. Another way blood flow and digestion are connected is because the stomach is a muscle, thus is moves and requires energy. That energy comes from the oxygen and nutrients that is supplied by the blood. These are just some examples.
