Science Milestone 2 (y8) Flashcards
What is aerobic respiration?
Respiration with oxygen
What is anaerobic respiration?
Respiration without oxygen
What is the word equation for aerobic respiration?
oxygen + glucose –> carbon dioxide + water + (energy)
What is the word equation for anaerobic respiration?
Glucose –> lactic acid
Why do we get muscle cramps after anaerobic respiration?
Lactic acid is toxic to muscles because it stops them contracting and
relaxing properly.
What are the 4 ways alveoli are adapted for their job?
A large surface area, A moist surface to allow oxygen to dissolve, a thin wall to allow easy diffusion of gases, many blood capillaries surround them for easy gas exchange
Why is smoking harmful?
Because of all the chemicals in it; tar, nicotine and carbon monoxide
When the muscles start to exercise, they use the
___________ to release more ___________ from
respiration.
Oxygen, energy
What is the addictive substance called in cigarettes?
Nicotine
What is the substance in cigarettes that lowers the
amount of oxygen the red blood cells can carry?
Carbon monoxide
What is secondary smoking ?
Inhaling smoke from other people’s cigarettes
What part of the blood carries oxygen?
Red blood cells
What part of the blood carries glucose?
Plasma
What are white blood cells for?
Protecting your body from disease (part of your immunity system.
What are platelets for?
Form clots and stop or prevent bleeding
What happens during an asthma attack?
When the lungs become agitated the airways become narrow.
Why do we breathe?
To get the oxygen needed for respiration
What happens during inhalation?
Intercostal muscles contract,
ribs move up + out, diaphragm contracts, and moves down
What happens during exhalation?
Intercostal muscles relax,
ribs move down and in diaphragm relaxes and moves upwards
During inhalation, Volume _________, Pressure _________
Volume increases, Pressure decreases
During exhalation, Volume _________, Pressure _________
Volume decreases, Pressure increases
What is Lung Volume?
The volume of air you can breathe in a single breath
What are the 7 life processes?
Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition
Where does respiration take place in the body?
In every cell in our body
