Compared with the hemoglobin of a person with sickle cell disease, normal hemoglobin is

a. longer.
b. shorter.
c. less soluble.
d. more soluble.

, i beg you not to guess the answer

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

Which of the following was a characteristic of a dromaeosaur? modified front claw grasping with their forelimbs both a and b none of the above

Consider the following reaction: 2h2 + o2 —> 2h2o a) what are the reactants in this reaction? b) what are the products in this reaction? c) how many molecules of oxygen are used in this reaction?