Increased partial pressure of O2 in plasma from 50mmHg to 100 mmHg leads to following: O A) 2 fold increase of O2 carried in blood B) 2 fold increase of O2 bound to hemoglobin OC) 2 fold increase of dissolved oxygen
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- What is oxyhemoglobin? Where does it form?How does hemoglobin help maintain the oxygen partial pressure gradient during gas transport in the body?3) which of the following would increase the relase of erythropoietin by the kidneys? A) all of these answers would cause an increase in erythropoietin release s B) decrease in red blood cells only C) decreased oxygen availability only D) hypoxia due to a decrease in red blood cells only F) increased tissue demand for oxygen only
- Which of the following statements is FALSE regarding a leftward shift in the hemoglobin-oxygen dissociation curve? A) Affinity for oxygen is increased. B) Oxygen loading onto the hemoglobin is increased. C) Hemoglobin is more saturated at a given PO2. D) It can be caused by a decrease in temperature. E) It can be caused by a decrease in blood pH.Which of the following statements is FALSE regarding a rightward shift in the hemoglobin-oxygen dissociation curve? A) Affinity for oxygen is increased. B) Oxygen loading onto the hemoglobin is increased. C) Hemoglobin is more saturated at a given PO2. D) It can be caused by a decrease in temperature. E) It can be caused by a decrease in blood pH.Arrange the following in the ascending ( small to large) order of the percentage of dissolving CO2. 1 plasma 2 hemoglobin 3 cytoplasm of RBC a) 2,3,1 b)1,3,2, c)2,1,3 d)3,2,1 e)1,2,3 f) 3,1,2
- Which of the following can affect the binding of oxygen to hemoglobin? A) The pH of plasma OB) The levels of 2,3-bisphosphoglycerate C) Albumin levels in plasma D) a and b E) a and c OF) a, b and cWhich of the following concerning hemoglobin is true? a) BPG decreases at high altitudes and causes more O2 offloading in tissues b) As pH increases, [CO2] increases in tissues, causing more O2 release in tissue c) The R state is stabilized by CO2 binding, whereas the T state is stabilized by O2 binding d) About 38% of oxygen dissociates from hemoglobin in tissues e) Hemoglobin has a higher affinity for oxygen than carbon monoxide My guess is D. What following statement is TRUE concerning motifs and domains? a) Both motifs and domains are independently stable. b) Domains undergo dynamic individual changes that affect the entire protein c) B-a-ß loops, B barrels, and helix-turn-helix structure are types of domains d) Motifs and domains are part of secondary structural elements e) Ab initio computations predict motif folds accurately a majority of the time My guess is B. Which of the following is TRUE under the following conditions: an enzyme displaying Michaelis-Menten kinetics…Which of the following concerning hemoglobin is true? a) BPG decreases at high altitudes and causes more O2 offloading in tissues b) As pH increases, [CO2] increases in tissues, causing more O2 release in tissue c) The R state is stabilized by CO2 binding, whereas the T state is stabilized by O2 binding d) About 38% of oxygen dissociates from hemoglobin in tissues e) Hemoglobin has a higher affinity for oxygen than carbon monoxide My guess is D.
- Choose the factors that favor LOADING of oxygen onto hemoglobin. a) higher PO b) higher pH c) lower PCO d) lower BPG e) all of the aboveWhich of the following statements are TRUE: Very low oxygen levels will cause: a) Myoglobin instead of hemeglobin will be used to transfer oxygen to cells b) You might experience feelings similar to sickle-cell anemia c) You might have a higher total concentration of hemeglobin to help transport enough oxygen. d) Oxygen will be more concentrated in the air, resulting in higher saturation of hemeglobinHow is most CO transported in the bloodstream? a) In the plasma, as CO b) In the RBC, as CO c) In the RBC, as HCO d) In the plasma, as HCO
