Exchange of Gases

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Biology
•
9th - 10th Grade
•
Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the process called when oxygen enters the pulmonary capillaries from the alveoli?
Internal respiration
Cellular respiration
Pulmonary respiration
Photosynthesis
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which factor is crucial in determining the direction of gas exchange?
Humidity
Wind speed
Partial pressure
Temperature
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the diffusion membrane in the lungs primarily composed of?
Muscle tissue
Cartilage
Three layers including squamous epithelium
Bone
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does carbon dioxide diffuse more readily than oxygen across the diffusion membrane?
It is more soluble in water
It is more reactive
It is less dense
It is lighter
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Approximately how many alveoli are present in human lungs?
300 million
200 million
100 million
400 million
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the partial pressure of oxygen in alveolar air after inspiration?
120 mm Hg
40 mm Hg
95 mm Hg
105 mm Hg
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does carbon dioxide move from the pulmonary capillaries to the alveoli?
Through active transport
Via facilitated diffusion
By osmosis
Due to a partial pressure gradient
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