Explanation:
Each hemoglobin molecule is made up of four heme groups surrounding a globin group, forming a tetrahedral structure. ... There are four iron atoms in each molecule of hemoglobin, which accordingly can bind four atoms of oxygen. Globin consists of two linked pairs of polypeptide chains.
In a lot of cases, many people are unaware that they have HIV/AIDS, therefore it doesn't get reported and they end up spreading it to those they share beverages with or have sexual interactions with.
True. Explanation: entrainment of ventilation and locomotion
I would probably say false,cause everything is balance
