Which statement is true?
a. oxygen uptake decreases as the body requires more oxygen and faster removal of carbon dioxide.
b. the exchange of oxygen and carbon dioxide occurs in the bronchioles in the lungs.
c. oxygen diffuses into the bloodstream because there is a higher concentration of oxygen in the lungs than in the blood flowing into them.
d. the blood that flows into the lungs and past the alveoli is blood that has just circulated around the body and is rich in oxygen.

John and jane jones’ newborn baby girl, leah, has just been diagnosed with galactosemia. prior to their genetic counseling appointment, they submitted this family history: john and jane’s older child, a son named lee, does not have galactosemia. john is the only child of hanna and harry. harry was an only child. hanna has two older sisters, hope (the oldest) and holly. both harry and hanna’s parents lived in good health into their 80s. jane’s brother, joe, is married to jen. they have a son, les, who is a healthy nine-year-old with myopia (nearsightedness) but no sign of galactosemia. jane’s mother, hilda, is alive and healthy; jane’s father, henry, passed away last year of a sudden heart attack. hilda and henry have no family history of galactosemia. use the information in the family history to construct a pedigree for this family.