To discuss:
The two forms and the relative amounts of O2 transported by the blood, O2 binding to hemoglobin, amount of O2 a molecule of hemoglobin can transport, and the term used when O2 binds to hemoglobin.
Introduction:
Blood is an aqueous fluid that contains a red pigment called as hemoglobin (Hb). Hemoglobin is a blood protein, which has four subunits: two alpha and two beta subunits. It is a molecule that can bind and carry oxygen (O2) inside the tissues of the body where it is released and enters
Want to see the full answer?
Check out a sample textbook solutionChapter 22 Solutions
ANATOMY & PHYSIOLOGY LL\AC
- Factors involved in the difference between oxyhemoglobin values and cyanmethemoglobin values in normal individuals.arrow_forwardtrue or false ? Oxygen binding to hemoglobin has what affect on additional molecule of oxygen binding to the same molecule of hemoglobin?arrow_forwardReferring to the loading and unloading of oxygen from hemoglobin (as illustrated in the figure), which of the following statements is correct? Oxygen Dissociation Curve.png Group of answer choices When a person in ventilating at rest, 75% of hemoglobin is still oxyhemoglobin The percent saturation of hemoglobin is higher at higher partial pressures of oxygen A decrease in the pH of the blood would promote unloading oxygen from the hemoglobin All of these are correctarrow_forward
- Carbon monoxide (CO) is a colorless, odorless gas produced during combustion of fuels (for example, by car engines and furnaces). The following graph depicts an oxygen dissociation curve in the absence and presence of varying amounts of carbon monoxide. Based on these results, in the presence of 20% CO, when PO2 is 90mmHg you should expect each hemoglobin molecule to have _____ molecule(s) of O2 bound a) 1 b) 2 c) 3 d) 4arrow_forwardWhich statement about BPG's interaction with hemoglobin is correct? Group of answer choices BPG binds with a stoichiometry of one molecule per hemoglobin subunit Without BPG, hemoglobin would not be able to release oxygen in muscle tissue BPG stimulates the ability of hemoglobin to take up oxygen in the lungs BPG binding counters the Bohr effect in muscle tissue, causing an increase in pH BPG's negative charge interferes with ion pair formation, thus favoring the R statearrow_forwardDescribe the properties of haemoglobin that enable it to carry out its function of oxygen and carbon dioxide transportarrow_forward
- The hemoglobin in mammalian blood is usually thought ofsimply as increasing the amount of O2 that can be carried by eachliter of blood. However, in a lecture on hemoglobin, a respiratoryphysiologist made the following statement: “The presence ofhemoglobin in the blood also makes possible the rapid uptakeof O2 by the blood as it flows through the lungs.” Explain thelecturer’s point.arrow_forwardWhich are not allosteric effects that occur in hemoglobin? Are used by H* Involve binding away from the heme group Increase the Hill coefficient nH Reduce the affinity of heme for O2 Are used by DPGarrow_forwardHemoglobin A inhibits the formation of the long fibers of hemoglobin S and the subsequent sickling of the red cell on deoxygenation. Why does hemoglobin A have this effect?arrow_forward
- A plasma increase of which of the following will cause a leftward shift of the hemoglobin saturation curve? O pH O PACO2 O 2,3 BPGarrow_forwardHow a molecule of hemoglobin is able to bind oxygen efficiently in the lungs and yet release it efficiently in the tissues.arrow_forwardMyoglobin has a ______________ affinity for oxygen compared to hemoglobin, and therefore oxygen. it માતા ના બાર વાં Higher; transports Lower; transports Lower; stores Higher; storesarrow_forward
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage LearningHuman Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning