Question

Compared with normal hemoglobin, the hemoglobin of a person with sickle cell disease
a.
is longer.
b.
is shorter.
c.
has a different sequence of amino acids.
d.
is sickle-shaped.
e.
has the same sequence of amino acids.

Answer 1

I am pretty sure that compared with normal hemoglobin, the hemoglobin of a person with sickle cell disease is shorter. I consider the second option as a correct one because cells have a shorter life span unlike life span of shaped red blood cells. I hope you will  find  this explanation really helpful.
Regards!