What carries h and electrons from the light reactions to the calvin cycle?

answer correctly, and i will give brainliest..

answer; ///(b) it is composed of four protein chains and four heme groups;

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]