Each hemoglobin contains four iron-containing heme groups and four polypeptide chains. Four oxygen molecules can bind each Hb molecule.
True, four hemoglobin chains will contain one heme group, which will bind exactly one oxygen molecule. Since hemoglobin contains four globin chains with four heme groups, four oxygen molecules can bind to one hemoglobin molecule.
<h3>What is
hemoglobin ?</h3>
Blood-carrying protein hemoglobin (haemoglobin BrE) is derived from the Greek word haîma and the Latin term globus. (/hi-m-lo-bn, h-mo-/ abbreviated Hb or Hgb, is the iron-containing oxygen-transport metalloprotein found in the tissues of some invertebrates as well as the red blood cells (erythrocytes) of practically all vertebrates (with the exception of the fish family Channichthyidae). The blood's hemoglobin transports oxygen from the respiratory system, including the lungs and gills, to the rest of the body (i.e. tissues). There, the oxygen is released, allowing aerobic respiration to take place and produce energy for an organism's metabolic processes. Every 100 mL of blood in a healthy person has 12 to 20 grams of hemoglobin.
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<span>When the dna pieces called telomeres get too short, the cell can no longer divide.
</span>We can define Telomeres as they<span> are the caps that are present at the end of each strand of DNA and there function is also that they protect our chromosomes, when they get too short the cell can no longer divide these dna pieces and they die.</span>
Answer:
The law of Superposition is where there are multiple layers of rock or fossil. The top layer is younger then the bottom. "The law of superposition is used in geology, archaeology, and other fields dealing with geological stratigraphy." The only problem with this way of determining rocks and fossils is that it gives a relative age not an absolute age.
Answer: The most likely answers would be in minerals, skeletal material, or something like amber. Sorry if this is incorrect the question was kind of vague bc i wasn't sure whether you wanted the types of possible fossil preserves or if it was a specific type of fossil preserve. But i hope this helped god bless you and have a great day! :D
The cell<span> grows at a steady rate throughout interphase</span>