Which of the following statements most accurately describes haemoglobiny Select one:
a. It is a protein found in red blood cells that binds with carbon dioxide
b. It is a protein found in plasma and carries oxygen
C. It is another form of oxygen
O d. It is a protein found in red blood cells that binds with oxygen
e. It is an electrolyte found in plasma

The body uses fight or flight as a way of defending itself from stress. question 2 options: true false

Check all that occur during ventricular systole. a. the av valves open to allow blood to enter the ventricles from the atria. b. the av valves open to allow blood to enter the ventricles from the atria. c. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. d. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. e. the semilunar valves open to allow blood to flow into the large arteries. f. the semilunar valves open to allow blood to flow into the large arteries. g. the av valves close to prevent backflow of blood into the atria.

Where does peer pressure come from? a.the power of culture b.the influences of others c.people who purposely try harm you d.the messages in tv commercials