Answer:
The sodium-potassium pump (PDB entries 2zxe and 3b8e ) is found in our cellular membranes, where it is in charge of generating a gradient of ions. It continually pumps sodium ions out of the cell and potassium ions into the cell, powered by ATP.
Explanation:
I’m pretty sure is the first one
In the circulatory system, nutrients such as amino acids and glucose are transported by the PLASMA.
The plasma is the liquid portion of the blood and one of its most important function is to transport materials such as glucose, amino acids, hormones, enzymes, water, etc.
a. bone structure is correct because many species look similar but we can't tell if they have an EVOLUTIONARY relationship unless we look at bone structure.
