Red blood cells are disc shaped. It is thought one factor that allows them to have this shape is because they do not have a nucleus. This tends to increase amount of space inside the cell for hemoglobin.
They have a flexible disc shape which helps increase the surface- to- area volume ratio which enables oxygen and carbon dioxide to diffuse across the red blood cell's plasma membrane more readily.
Their disc shape also enables them to squeeze through tiny capillaries that are half their size .
The answer is number 4 hope this helps
Answer:
Por cada par de electrones transportados a la cadena de transporte de electrones por una molécula de NADH, se generan entre 2 y 3 ATP. Por cada par de electrones transferidos por FADH2, se generan entre 1 y 2 ATP
Explanation:
