An electronic pulse oximeter, which can be clipped on the bridge of the nose, forehead, on the earlobe, or to the tip of finger, determines the oxygen concentration in arterial blood. Hemoglobin is the protein complex in blood that is responsible for carrying oxygen around the body. The pulse oximeter actually measures the concentration of hemoglobin in the blood and determines oxygen concentration from this value.
The similarity between the sea star larva of modern times and some primitive vertebrae larvae suggests that they <span>share a common ancestor with sea stars.</span>
The cheek cell does not have a large central vacuole, cell wall, or chloroplast
C. once the substrates bind to the enzyme, the active site of the enzyme changes, to the shape of the substrate. Once the product detaches from the enzyme, then the active site returns to it's normal shape
