end of unit test 1

What equipment is commonly used to measure breathing rate?

• Thermometer

• Stopwatch

• Ruler

• Scale

Which variable should be changed in an experiment on breathing rate during exercise?

• Age of participant

• Weather

• Time of day

• Running speed

Which variable should be kept the same in a breathing rate experiment?

• Type of shoes

• Hair color

• Height

• Duration of running

How should results of a breathing rate experiment be presented?

• Pie chart

• Paragraph

• Checklist

• Line graph

What is the name of the tube that carries air to the lungs?

• Esophagus

• Trachea

• Bronchus

• Air sac

Which part of the respiratory system branches into the lungs?

• Trachea

• Bronchus

• Diaphragm

• Air sac

What is the function of air sacs in the lungs?

• Pump blood

• Filter air

• Store oxygen

• Exchange gases

Which of the following is the correct word equation for aerobic respiration?

• Oxygen + Water → Glucose + Carbon dioxide

• Carbon dioxide + Water → Glucose + Oxygen

• Glucose + Carbon dioxide → Oxygen + Water

• Glucose + Oxygen → Carbon dioxide + Water

What does an increase in pulse rate after exercise indicate?

• Dehydration

• Increased demand for oxygen

• Low energy

• Muscle fatigue

Why is it unreliable to judge fitness from one pulse rate test?

• The test is too expensive

• Only one measurement was taken

• Everyone has the same pulse rate

• Pulse rate doesn’t change