Answer:
A blood cell carries Hemoglobin. A neuron doesn't have hemoglobin, and uses other proteins.
Step-by-step explanation:
Red blood cells carry a specific type of protein, called hemoglobin, which is able to bind oxygen and release it in other tissues. A nerve cell doesn't have this protein because it doesn't need to bind oxygen. Instead, the nerve cell uses other proteins that help it transmit signals to other cells.