An electron transport chain pumps protons across a membrane while transferring electrons from one chemical to another.
A
Explanation:
everything else finds or eats food that was made otherwise.
Contracture develops when normally elastic connective tissue are replaced with nonelastic fibrous tissues.
Contracture is the prolonged state of shortening or tightened tissue. Contracture develops when the normally stretchy tissues are replaced by non stretchy fiber-like tissue. This tissue makes it hard to stretch the area and prevents normal movement. It mostly occurs in the skin, the tissues underneath, and the muscles, tendons, ligaments surrounding a joint.
Answer:
Photosynthesis also relies on a compound called NADP
which is an electron carrier accepts and transfers high-energy electrons. *
