Why do large multicellular organisms need transport systems while simple unicellular organisms do not?
Large organisms have a much smaller surface area to volume ratio compared to smaller ones
Diffusion does not work in large multicellular organisms
Unicellular organisms have a much smaller surface area to volume ratio than multicellular organisms
How is carbon dioxide transported in the blood?
In plasma
In white blood cells
In platelets
Which type of blood vessel contains valves?
Artery
Vein
Capillary
What sort of circulatory system is the human circulatory system?
Open
Single
Double
Which chamber of the heart produces the highest pressure in the blood?
Right atrium
Left ventricle
Left atrium
Anaerobic respiration does not require which substance?
Carbon dioxide
Glucose
Oxygen
Which of these is the word equation for aerobic respiration?
Glucose + oxygen → carbon dioxide + water
Glucose → lactic acid + carbon dioxide
Carbon dioxide + water → glucose + oxygen
Compared with aerobic respiration, anaerobic respiration releases how much energy?
More energy
Less energy
Same energy
What is the name of the apparatus used to determine the respiration rate?
Potometer
Respirator
Respirometer
How is cardiac output (CO) calculated?
CO = stroke volume × heart rate
CO = stroke volume ÷ heart rate
CO = heart rate ÷ stroke volume