Sickle-cell disease is a result of an abnormality in __________.

a. albumin
b. thrombin
c. erythropoietin
d. hemoglobin
e. immunoglobulins


Answer: d. hemoglobin

Biology & Microbiology

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Thinking about the surface of cells, which of these cells has the largest problems due to surface area limitations?

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Biology & Microbiology