Ones can carry semen while one doesn’t.
They both carry urine.
Answer:
I think it is true for 3 and false for 4 but i am 100% so i won't trust me fully so yeah.
Explanation:
For example, when an oxygen atom binds to one of hemoglobin's four binding sites, the affinity to oxygen of the three remaining available binding sites increases; i.e. oxygen is more likely to bind to a hemoglobin bound to one oxygen than to an unbound hemoglobin.
