
Respiratory System Functions and Mechanisms

Interactive Video
•
Biology, Science
•
6th - 10th Grade
•
Hard

Olivia Brooks
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of hemoglobin in red blood cells?
To transport nutrients
To bind and carry oxygen
To fight infections
To produce energy
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does carbon dioxide primarily travel in the blood?
Bound to hemoglobin
As a free gas
Dissolved in plasma
As bicarbonate ion
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do humans use lungs instead of skin for respiration?
Lungs are more efficient in water
Skin is too thick for gas exchange
Skin cannot retain moisture
Lungs allow for a moist environment for gas exchange
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of nasal hairs in the respiratory system?
To humidify the air
To filter out larger particles
To produce mucus
To cool the air
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What structure prevents food from entering the trachea?
Bronchi
Larynx
Alveoli
Epiglottis
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Where does gas exchange occur in the respiratory system?
In the nasal cavity
In the alveoli
In the bronchi
In the trachea
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the diaphragm during inhalation?
It remains stationary
It contracts and moves down
It contracts and moves up
It relaxes and moves up
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