____ is the molecule in red blood cells that accepts oxygen in the lungs and carries it to the body's tissues to allow cellular respiration.

Question

Quizplus · Accepted Answer

Hemoglobin is a protein molecule found in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs. It contains iron ions that bind to oxygen molecules and its structure allows it to change shape to facilitate the transport of oxygen. Chlorophyll is a pigment in plants that absorbs light energy for photosynthesis, and hemocyanin is a similar oxygen-carrying protein found in certain invertebrates. Hemoprotein is a general term for any protein that contains a heme group, which can bind to oxygen, but not specific to red blood cells.

____ Is the Molecule in Red Blood Cells That Accepts