Final answer:
Bacteria that are unable to lyse red blood cells and make no apparent change in blood agar around the colonies are termed non-hemolytic.
Step-by-step explanation:
Bacteria that are unable to lyse red blood cells and make no apparent change in blood agar around the colonies are termed non-hemolytic. Non-hemolytic bacteria do not destroy red blood cells and do not cause any changes in the surrounding agar. This can be observed on blood agar plates, where hemolytic bacteria cause a clear area around the colonies due to the destruction of red blood cells.