EASY
Earn 100

Gas Inhaled air % Exhaled air %
Oxygen  21 16
Carbon dioxide 0.03 4.4
Nitrogen 78 78

What has raised the percentage of carbon dioxide in exhaled air?

Important Questions on Respiration - The Energy Producing System

MEDIUM
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings

The middle step between the gaseous exchange at lung’s level and tissue level is _____.

MEDIUM
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings
Explain the mechanism of respiration.
HARD
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings

Skin: Sweat : Lungs: _____

MEDIUM
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings
Differentiate between the two types of respiration involved in gaseous exchange.
MEDIUM
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings
Describe the mechanism of breathing in human beings.
MEDIUM
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings
” Breathing cycle is rhythmic, whereas the exchange of gases is a continuous process”. Justify this statement.
MEDIUM
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings
When we inhale, nitrogen also goes inside along with oxygen. This nitrogen is:
HARD
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings

Neha went to the lakeside for a picnic with her friends. Suddenly they noticed a man drowning in the lake. Everyone was frightened but Neha asked them to stop panicking and take the man out of water. After the man was rescued, he was found unconscious. Neha then suggested that mouth-to-mouth artificial respiration should be given to save the man. One of her friends did as she guided. Finally, the man was saved. He thanked Neha and her friends for their help.
(i) Why is artificial respiration given?
(ii) Can artificial respiration bring back a person to consciousness even after death?

MEDIUM
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings
How are oxygen and carbon dioxide transported in human beings? How are lungs designed to maximize the area for exchange of gases?
MEDIUM
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings
Which among the following will have higher breathing rate?
MEDIUM
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings

Differentiate between external and internal (or cellular) respiration.

MEDIUM
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings
State the role of following in the human respiratory system:
Diaphragm.
MEDIUM
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings
What role is played by diaphragm in your body?
MEDIUM
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings
Why does the rate of breathing increase by 20 to 25 times per minute during vigorous exercise?
MEDIUM
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings
Explain the mechanism of breathing.
MEDIUM
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings
With the help of an experiment demonstrate the mechanism of breathing.
EASY
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings
During which phase of breathing diaphragm moves downward and becomes flat?
MEDIUM
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings
State how is the process of breathing brought about in our body.
MEDIUM
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings
List four conditions required for efficient gas exchange in an organism?
HARD
Science>Biology>Respiration - The Energy Producing System>Mechanism of Respiration in Human Beings
Describe the mechanism of breathing.