Which is the longest bone in the body ?
A. Humerus
B. Femur
C. Calf bone
D. Collarbone
Select your answer:
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Living Organisms › ViewWhen a multicellular organism is damaged, it will repair itself as
A. it mutates.
B. the cells work together.
C. the cells move.
D. it makes its own food.
DNA Replication › View
Which is the third step?
A. DNA Helicase unwinds original DNA strand
B. RNA Primase lays down RNA primer for new nucleotide bases.
C. DNA polymerase builds new strands by bring in new nucleotide bases.
D. Ligase knits together fragments on lagging strand