Biology: respiration (2j) and breathing (2i) (2jkl) Flashcards
What is the word equation for aerobic respiration?
ENERGY is also released.
Where does respiration happen?
In cells of all living things
If there is not enough oxygen for aerobic respiration what happens?
Anaerobic respiration
What reacts together in aerobic respiration?
Glucose and oxygen
How could you test exhaled air to prove it contains carbon dioxide?
Pass it through limewater and the limewater will change from clear to cloudy.
This experiment was set up. The liquid in the conical flasks is limewater. Air is drawn in by someone sucking the middle tube. Normal air moves in from the left hand side and exhaled air goes through the right hand side. What will happen to the limewater on each side?
The left hand side will stay clear and the right hand side will go cloudy because exhaled air contains more carbon dioxide.
Where does the carbon dioxide produced in respiration go?
It goes to the lungs to be breathed out.
What is the difference between breathing and respiration?
Respiration happens in cells and is the release of energy from food.
Breathing happens in the lungs and is the exchange of gases, oxygen moves in to the blood and carbon dioxide moves out.
How are the lungs adapted for gas exchange?
Large surface area due to folded surface of alveoli
Moist surfaces
Good blood supply to transort the gases to and from the alveoli
Oxygen binds to red blood cells in our blood, where does it go to?
All over the body to cells so it can be used for respiration.
What is the name of the system which includes the heart, blood vessels and blood and carries things around our bodies?
Circulatory system
Other than oxygen and carbon dioxide what else does the blood carry?
Nutrients such as glucose, amino acids and fatty acids.
It also carries waste such as urea which part of urine.
Why is smoking bad for the lungs?
Decreases surface area by destroying alveoli, causes inflammation and can cause cancer.
Which organ in this picture is not part of the respiratory system?
Describe what causes air to be drawn in and out of the lungs,
heart.
Breathing in: diaphragm moves down and ribs move up so volume (space) in lungs increases and pressure falls. This causes air to be sucked in.
Breathing out: Diaphragm moves up and ribs move down so volume decreases and air is pushed out.
State the route air follows as it enters the lungs.
mouth, trachea, bronchi, bronchioles then alveoli.
N.B The singular of bronchi is bronchus.
