The human respiratory system is adapted to allow air to pass in and out of the body, and for efficient gas exchange to happen.
Which is the correct equation for aerobic respiration in humans?
glucose + oxygen -> carbon dioxide + water + energy
glucose + oxygen -> lactic acid
glucose -> lactic acid
Where in a cell do most aerobic respiration reactions happen?
In the nucleus
In the cell membrane
In the mitochondria
Which of these is the correctly balanced equation for respiration?
Which products are made during anaerobic respiration in yeast?
Carbon dioxide and water
Ethanol and water
Ethanol and carbon dioxide
Which of these test results indicates the presence of carbon dioxide?
Limewater turns milky
A glowing splint relights
A lit splint pops
When does respiration happen in plants?
All the time
Only during the day
Only at night
What are the tiny air sacs in the lungs called?
During exercise, what happens to breathing in humans?
The depth of breathing increases and the breathing rate increases
The breathing rate increases but not the depth of breathing
The depth of breathing increases but not the breathing rate