Researchers Have Long Attempted to Find a Substitute for Red

question 1

Multiple Choice

Researchers have long attempted to find a substitute for red blood cells, specifically the ability to carry oxygen. Which of the following properties would be important for "artificial red blood cells"?

• A) must attach to and never release oxygen
• B) must release oxygen to any other medium despite concentration gradient
• C) would bind to iron molecules already bound to other artificial blood units
• D) must provide the clotting reaction
• E) would bind to oxygen in a high oxygen concentration solution and release oxygen when in a low oxygen concentration solution