★ Biology for Engineers Quiz
A chain of repeating nucleotide is called
A. Nucleic acid
B. amino acids
C. elastomer
D. cannot say
Select your answer:

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Axial & Appendicular Skeleton › View Which spine is shown in picture?
A. hunchback
B. scoliosis
C. kyphosis
D. none of the above
Composition of Blood and Blood Cells › View
This is a blood smear. What type of cell is indicated by the RED arrow?
A. erythrocyte (RBC)
B. megakaryocyte
C. leukocyte (WBC)
D. thrombocyte (platelet)