True of false:

1. The Bohr effect explains the manner in which pH changes the binding affinity of hemoglobin for O2.

i think this is true

2. Hemoglobin binding affinity increases as Po2 increases.

im not sure about this

3. O2 will passively diffuse and bind with hemoglobin that is less than 1mm from the surface of a blood sample.

i think this is false

4. An oximeter is a device that is used to determine percent CO2 saturation of blood.

i think this is false

5. A rightward shift in the O2-dissociation curve means that hemoglobin is more likely to bind with O2.

im not sure about this

please help!

thanks but i AM aware of the seaching techniques

i was just unsure of some stuffs

i'll assume you don't have the answers to my questions

thanks anyways

1. True: The Bohr effect refers to the phenomenon where pH affects the binding affinity of hemoglobin for oxygen. When pH decreases (becomes more acidic), such as in tissues with a high concentration of carbon dioxide, hemoglobin's affinity for oxygen decreases, allowing it to be released to the tissues that need it. To confirm this, you can search for "Bohr effect" or "hemoglobin pH dependence" in reliable sources like textbooks or scientific articles.

2. True: Hemoglobin's binding affinity does increase as partial pressure of oxygen (PO2) increases. This is because as oxygen concentration increases in the lungs, the majority of oxygen binds to hemoglobin to be transported to tissues. confirm this by researching "hemoglobin oxygen binding affinity" or "hemoglobin oxygen dissociation curve."

3. False: Oxygen does not passively diffuse and bind with hemoglobin that is less than 1mm from the surface of a blood sample. Oxygen needs to cross the alveolar-capillary membrane in the lungs to reach hemoglobin within red blood cells. This process is facilitated by the difference in partial pressures of oxygen between the lungs and blood. To verify this, you can search for "oxygen diffusion in the lungs" or "alveolar-capillary membrane gas exchange."

4. False: An oximeter is a device used to measure the oxygen saturation of blood, not percent CO2 saturation. Oximeters are commonly used to measure the percentage of hemoglobin binding sites that are occupied by oxygen, indicating how well the blood is oxygenated. You can look up "oximeter definition" or "oxygen saturation measurement" to confirm this.

5. False: A rightward shift in the oxygen-dissociation curve indicates that hemoglobin is less likely to bind with oxygen at a given partial pressure of oxygen. It represents a decrease in affinity of hemoglobin for oxygen. This shift can occur due to factors like increased temperature, increased carbon dioxide, or decreased pH, as in the Bohr effect mentioned earlier. Confirm this by searching for "right shift oxygen dissociation curve" or "hemoglobin affinity for oxygen."