Respiration Flashcards
Respiration is…
The breakdown of food to release energy
Word equation for aerobic respiration
Glucose+oxygen———> ENERYGY + carbon+ water
dioxide
Flaws in the burning food experiment
Same mass of food
Getting all the food burnt
Keeping the distance between the food and the thermometer constant
Why is a balanced diet important?
Because your body needs to get the right nutrients to function properly
Why are lungs?
Organs where oxygen enters and leaves the body.
The structure of lungs
Nasal cavity, Trachea Bronchi. Vise versa for exhalation Bronchioles Alvioli
How do we breathe?
The intercostal muscles expand, and the diaphragm moves down.
What are inside the lungs?
Mucus, cilia(hair like things)
They remove dust and dirt.
The composition of air
20% Oxygen
78% Nitrogen
0.04% Carbon dioxide
In the woodlice experiment, why did the water rise?
Because the woodlice used up all the oxygen and created a vacuum beaches the sodium hydroxide absorbed the carbon dioxide so the the water was dried up.
How is breathing achieved.
The action of the intercostal muscles move out, and the diaphragm moves down for inhalation and vice-versa for exhalation
The air we breathe in contains the same volume of oxygen as the air we out
False. The air we breathe out has a lower value of oxygen than the air we breathe in.
