Final answer:
Erythrocytes have several structural characteristics that contribute to their gas transport functions, including containing hemoglobin and having a biconcave shape. However, they are mitotically inactive and cannot produce energy anaerobically.
Step-by-step explanation:
Erythrocytes, or red blood cells, have several structural characteristics that contribute to their gas transport functions. These include containing hemoglobin, having a biconcave shape, and being mitotically inactive. However, one characteristic that does not contribute to gas transport is the ability to produce energy anaerobically. Erythrocytes lack mitochondria and cannot metabolize oxygen, so they rely on anaerobic respiration to produce ATP.