Name the 2 hydrogen of the electrons transport chain

Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?

Consider the activity and specificity of the three enzymes. pepsin is most active in the human and to digest

Can result as a complication of diabetes due to damage to the arterial walls and excess fat in the blood.