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.
Normal (i.e. healthy) red bloods cells live about 120 days in the bloodstream, after which they die and are replaced by new ones. In some unhealthy conditions, for example in â¦ sickle cell anemia, red blood cells usually die about 10 times faster (after only 10 to 20 days).aking the world better, one answer at a time. Red blood cells last an average of 120 days in the bloodstream. When red blood cells age, they are removed by macrophages in the liver and spleen.