There are also three kinds of structures found in plant cells and not in animal cells. 1  cells have. ; 2  animal cells do not. 3  As noted in the description of the prokaryotic cell wall, the cell must also have a plasma membrane. 4  Plant cells have cell walls in addition to plasma membranes, not instead of plasma membranes. The. 2  for a eukaryotic cell is the same kind of structure, and has the same function as the plasma membrane of a prokaryotic cell. ( 3 ER) is a system of membrane-enclosed channels which ramifies throughout the cytoplasm of the cell. 4  It comes in two types--smooth and rough.
Â· just now. Report Abuse. Donated blood lasts for around 35 days as whole blood collected into a bag with anticoagulant and additives which help keep the blood cells alive (dextrose, phosphate and citrate). Plasma that is separated off can be frozen (at minimum -25 degrees Celcius) and kept for one year.
Red blood cells normally live for 110 to 120 days. After that, they naturally break down and are most often removed from the circulation by the spleen. Some diseases and processes cause red blood cells to break down too soon. This requires the bone marrow to make more red blood cells than normal. The balance between red blood cell breakdown and production determines how low the red blood cell count becomes. Conditions that can cause hemolysis include: