Answer:
Our bodies can break down these macromolecules to provide energy for endergonic reactions in our bodies
<span>The best place to test the pulse is just below the base of the thumb, on the wrist. This allows the person to continue their exercise while still being able to check the pulse rate and see if it has reached the level they are desiring.</span>
The best answer is B (semi permeable)
The cell membrane of a red blood cell is semi permeable membrane. This is a type of biological membrane that will allow certain molecules or ions to pass through while barring others.
Red blood cells have very thin membranes that allow oxygen diffuse through quickly. They are also permeable to water and osmosis across the membrane occurs very rapidly. In the body, they are bathed in isotonic plasma in which case water movement into the cell is equal to water movement out of the cell and so the cells remain intact.
