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- Nitric oxide (NO) is a gaseous molecule with lipid solubility similar to that of O2 and CO2. Endothelial cells lining arteries use NO to signal surrounding smooth muscle cells to relax, thereby increasing blood flow. What mechanism or mechanisms would transport NO from where it is produced in the cytoplasm of an endothelial cell into the cytoplasm of a smooth muscle cell, where it acts?I now know the structure difference between myoglobin and hemoglobin , however which exctaly structure difference make myglobin become a oxygen storage ? and not a oxygen transport?? Be specific! details describe how the structure connect to their role. also which exctaly structure difference make hemoglobin become better oxygen transport?? I need the specific structure that contribute to their unique role. I KNOW THE STRUCTURE DIFFERENCE , but don't understand which specific part make myoglobin only bind to oxygen, and not release oxygenOne molecule of 2,3-BPG binds to one tetramer of hemoglobin in a central cavity of the hemoglobin molecule. Is the interaction between BPG and hemoglobin stronger or weaker than it would be if BPG bound to the surface of the protein instead? Explain your answer (hint: think about how these different situations affect the dielectric constant).
- Protons influence the binding affinity of oxygen to hemoglobin. Based on the oxygen-transport mechanism of hemoglobin, which of the following is correct? A. The pH value of lung is lower than that of tissue B. Protons compete with oxygen C. Protons will facilitate oxygen release in lung D. Production of lactate during exercise will accelerate oxygen delivery.People have developed an alternative to plastic that decomposes in 6 months! Once people start using it, scientists start to find a new toxin in the water system, and experiments show that this toxin blocks sodium (Na+) channels. Explain why this is a serious concern and what this would mean for an organism, such as a person, that had too much of this toxin in its systemProtein that is located primarily in muscles and gives redness color of the muscle.* A. Hemoglobin B. Myoglobin C. Ferritin D. Transferrin
- Which one of the following is an example to positive feedback occurring in physiological system that caused large drop in free energy so reaction become irreversible? Select one: a. Blood clothing reaction involving fibrin and fibrinogen b. Enzyme of hexokinase associated with Glycolysis c.Bronchiole constriction in response to some allergens d.a & b e.a & c f.b&c g.a,b & cIn Florida every hurricane season, residents that have generators are warned to make sure their generators are well-ventilated and placed outside the home. You have been hired by the state to create a public service announcement to warn the general public about the use of generators indoors after a hurricane. Your supervisor wants you to explain to the public the diffusion process in the lungs and how it is related to possible death from inhaling carbon monoxide exhaust from the generator. Diffusion in the lungs explained Why diffusion of oxygen across the membrane may still occur but it won't be delivered to cells. Effect of CO on hemoglobinThe Hemoglobin subunits use a histidine amino acid to hold on to the heme group needed to chelate oxygen. You discover a new mutation in the Alpha-globin gene that causes it to code for a glycine instead of a histidine. These amino acids are very chemically different. Hypothesize how this mutation might affect oxygen transport.
- People have been known to do things to increase the amount of hemoglobin, the oxygen transport molecule, in their bloodstream. From a cell's point of view, what would be the advantage of increased oxygen levels during intense exercise?The binding of inositol 1,4,5-trisphosphate (IP3) to the IP3 receptor results in the release of from the endoplasmic reticulum. a) CAMP b) ATP O c) diacylglycerol d) calcium ionsA fish swims from a body of cool water into a body of warm water. As its body temperature rises, its rate of O2 consumption increases. The warm water, however is likely to have a lower concentration of dissolved O2 than the cool water because the solubility of O2 in water decreases as temperature increases. These two factors taken together, an increase in the fish's rate of O2 consumption and a decrease in the dissolved O2 concentration of its environmental water, can make it difficult for the fish to obtain enough O2 to meet its needs. The two factors can act as a two-pronged trap. Actually, however, the fish may face a three-pronged trap. How is the increase in temperature likely to affect the O2 affinity of the fish's hemoglobin, and how could the effect on hemoglobin add even further to the challenge the fish faces? Does global warming pose concerns of this sort?
