PRE TEST

Which protein is primarily responsible for transporting oxygen in the blood?

• Albumin

• Fibrinogen

• Hemoglobin

• Myoglobin

What effect does a decrease in blood pH have on hemoglobin's affinity for oxygen?

• Increases affinity, leading to more oxygen binding

• Decreases affinity, promoting oxygen release

• Has no effect on hemoglobin's affinity

• Increases affinity, but only in the lungs

Which factor does NOT directly affect the oxygen-hemoglobin dissociation curve?

• Temperature

• Carbon dioxide levels

• Glucose concentration

• pH levels

What is the primary form in which carbon dioxide is transported in the blood?

• Dissolved in plasma

• Bound to hemoglobin as carbaminohemoglobin

• As bicarbonate ions (HCO₃⁻)

• As carbonic acid (H₂CO₃)

Which enzyme catalyzes the conversion of carbon dioxide and water to carbonic acid in red blood cells?

• Carbonic anhydrase

• Catalase
  

• Amylase

• Pepsin