
Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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Question
Which of the following stabilize the hemoglobin quaternary structure of low-affinity to oxygen molecules?
Group of answer choices
a. CO
b. CO2
c. bisphosphoglycerate
d. H+
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- Recall from your BI110 class that metabolically active tissues produce CO2 as a by-product of cellular respiration. Those metabolically active tissues require the O2 that is brought by hemoglobin for the same process (cellular respiration). Explain why the effect of pH on hemoglobin’s affinity for oxygen is consistent with delivering it to actively metabolizing tissues. (Hint: think about what effect the presence of CO2 has on the tissues…)arrow_forwardfactors that affect the unloading (releasing ) of oxygen more quickly from hemoglobin include all the following except a. increased pressure of CO2 b. elevated chlorine ions c. increased temp d. lowered pHarrow_forwardThe following are the factors that affect rate of diffusion across respiratory membrane: a. Membrane thickness. b. Molecular weight and solubility of the gas. c. All of the above correct. d. Surface area. e. Partial pressure difference across respiratory membrane.arrow_forward
- COVID-19 symptoms are assiociated with which of the following pathology? a. Alveolar destruction b. Impaired gas exchange c. Mucus production d. Fluid accumulation in the alveolus e. All of the abovearrow_forwardWhy young people with anxiety attack can develop respiratory alkalosis? Which of the following values characterizes uncompensated respiratory alkalosis? pH PCO2 mmHg HCO3 mmol/L A 7.40 60 37 B 7.25 66 28 C 7.51 29 22 D 7.60 42 37 E 7.25 35 15arrow_forward) At a glance, does the science behind the Lumen device seem logical? Why do you think so? 2) Is measured CO2 truly an indicator that you are "burning" (breaking down for energy) ONLY carbs, or do you exhale CO2 no matter which of the Big 3 you're burning?arrow_forward
- What is the critical amino acid difference between the beta-chain and the gamma-chain of hemoglobin? How does this difference affect the hemoglobin binding to oxygen?arrow_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_forwardWhich of the following reactions contributes the most to gas transport in systemic capillaries than in pulmonary capillaries? A. Hb + O₂ -> HbO2 O E. HbCOz - Hb+CO2 OC. HbO2 -> Hb + O₂ O D.HbCO2 → Hb + HCO3 OE. HbH → Hb+H*arrow_forward
- Describe how the following allosteric effectors regulated Hemoglobin’s O2 affinity: • CO2• H+ (pH; Explain the basis for the Bohr Effect)• 2,3-BPG • COarrow_forwardIn regards to oxygen transport which of the following are true? A. 98.5% is transported in the blood bound to iron on the heme unit. B. 1.5% is transported in the blood bound to iron on the heme unit. C. 1.5% is transported in the blood bound to the white blood cells. D. 98.5% of transported in the blood bound to the white blood cells. Choose the correct answerarrow_forwardIn which range of partial pressure of oxygen does hemoglobin have the weakest bond with oxygen? a. Above 60 mmHg b. Between 60-100 mmHg c. Above 100 mmHg d. Below 60 mmHgarrow_forward
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