A&P Ch 18B Respiratory System

What is the main protein that binds oxygen in red blood cells?

• Myoglobin

• Hemoglobin

• Albumin

• Fibrinogen

How many heme units does each hemoglobin molecule contain?

• 2

• 3

• 4

• 5

What is the term for oxygen bound to hemoglobin?

• Carboxyhemoglobin

• Oxyhemoglobin

• Methemoglobin

• Deoxyhemoglobin

What is acute mountain sickness (AMS) caused by?

• High oxygen levels at sea level

• Low pressure of oxygen at high altitudes

• High carbon dioxide levels at high altitudes

• Low blood pH at sea level

What physiological change occurs during acclimatization?

• Decrease in red blood cell count

• This is the correct answer!

• Decrease in heart rate

• Increase in blood pressure

Tags

NGSS.HS-LS1-3

What is the main trigger for hyperventilation?

• High carbon dioxide levels

• Low carbon dioxide levels

• High oxygen levels

• Low oxygen levels

What is the primary adaptation during acclimatization?

• Increased oxygen demand

• Decreased oxygen demand

• Adjustment to low oxygen availability

• Adjustment to high carbon dioxide availability

Tags

NGSS.HS-LS4-4

What is the significance of the 'Heme group' in the hemoglobin structure?

• It binds carbon dioxide

• It binds oxygen

• It provides energy

• It stores iron

What is the role of the lungs in the process shown in the diagram?

• Produce red blood cells

• Exchange gases

• Store oxygen

• Filter blood

What component of hemoglobin binds to oxygen molecules?

• Globin

• Iron

• Heme

• Plasma