Quiz: Oxygen Transport Quiz


Oxygen Transport QuizOnline version Hb, curves, and transport by Namita Gehlot 1 Which component carries most of the blood’s oxygen in the lungs and tissues? a White blood cells b Plasma c Myoglobin d Hemoglobin 2 What is the primary function of red blood cells in oxygen transport? a Absorb CO2 for exhalation b Store oxygen in platelets c Produce oxygen in mitochondria d Carry oxygen via hemoglobin as O2 binds to iron 3 Which molecule binds oxygen with high affinity in muscle tissue for storage during rest? a Fibrinogen b Hemoglobin c Myoglobin d Albumin 4 Which curve describes how Hb saturation changes with PO2? a Bohr curve b Carbonic anhydrase curve c CO2 dissociation curve d Oxygen dissociation curve 5 In the lungs, why does Hb have high affinity for O2? a High PO2 promotes loading of O2 b Low temperature in tissues c Presence of CO2 in alveoli d Low pH in alveoli 6 What effect does a Bohr shift have on hemoglobin's O2 affinity? a Decreases affinity with rising CO2/H+] b Increases affinity with rising CO2/H+ c Only affects CO2 transport d No change with CO2 7 Which factor causes a rightward shift of the O2 dissociation curve? a Increased CO2 or H+ (low pH) b Decreased temperature c Alkalosis d Decreased CO2 8 Where is fetal hemoglobin (HbF) most effective in oxygen uptake? a In the brain b In the lungs of the fetus c In the spleen d Placental transfer from mother to fetus 9 Which organ efficiently stores and releases oxygen using myoglobin? a Spleen b Kidneys c Muscle tissue d Liver 10 Which statement best describes the partial pressure concept in oxygen transport? a PO2 drives loading and unloading of O2 b PO2 only exists in lungs c PO2 is constant throughout body d PO2 only affects CO2 transport

1

Which component carries most of the blood’s oxygen in the lungs and tissues?

a

White blood cells

b

Plasma

c

Myoglobin

d

Hemoglobin

2

What is the primary function of red blood cells in oxygen transport?

a

Absorb CO2 for exhalation

b

Store oxygen in platelets

c

Produce oxygen in mitochondria

d

Carry oxygen via hemoglobin as O2 binds to iron

3

Which molecule binds oxygen with high affinity in muscle tissue for storage during rest?

a

Fibrinogen

b

Hemoglobin

c

Myoglobin

d

Albumin

4

Which curve describes how Hb saturation changes with PO2?

a

Bohr curve

b

Carbonic anhydrase curve

c

CO2 dissociation curve

d

Oxygen dissociation curve

5

In the lungs, why does Hb have high affinity for O2?

a

High PO2 promotes loading of O2

b

Low temperature in tissues

c

Presence of CO2 in alveoli

d

Low pH in alveoli

6

What effect does a Bohr shift have on hemoglobin's O2 affinity?

a

Decreases affinity with rising CO2/H+]

b

Increases affinity with rising CO2/H+

c

Only affects CO2 transport

d

No change with CO2

7

Which factor causes a rightward shift of the O2 dissociation curve?

a

Increased CO2 or H+ (low pH)

b

Decreased temperature

c

Alkalosis

d

Decreased CO2

8

Where is fetal hemoglobin (HbF) most effective in oxygen uptake?

a

In the brain

b

In the lungs of the fetus

c

In the spleen

d

Placental transfer from mother to fetus

9

Which organ efficiently stores and releases oxygen using myoglobin?

a

Spleen

b

Kidneys

c

Muscle tissue

d

Liver

10

Which statement best describes the partial pressure concept in oxygen transport?

a

PO2 drives loading and unloading of O2

b

PO2 only exists in lungs

c

PO2 is constant throughout body

d

PO2 only affects CO2 transport

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Oxygen Transport Quiz

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Oxygen Transport QuizOnline version

by Namita Gehlot

Which component carries most of the blood’s oxygen in the lungs and tissues?

What is the primary function of red blood cells in oxygen transport?

Which molecule binds oxygen with high affinity in muscle tissue for storage during rest?

Which curve describes how Hb saturation changes with PO2?

In the lungs, why does Hb have high affinity for O2?

What effect does a Bohr shift have on hemoglobin's O2 affinity?

Which factor causes a rightward shift of the O2 dissociation curve?

Where is fetal hemoglobin (HbF) most effective in oxygen uptake?

Which organ efficiently stores and releases oxygen using myoglobin?

Which statement best describes the partial pressure concept in oxygen transport?

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