Which component of blood consists of cell fragments and is the main contributor to healing cuts?
a. erythrocytes
b. thrombocytes
c. leukocytes
d. plasma

The correct answer is Thrombocytes

Thrombocytes are another name for the platelets that are component of blood that functions in wound healing. They have coagulation factor that form clumps at the site of wound and forms a blood clot. Platelets contributes in hemostasis, the process of stopping bleeding at the site of cut. They gather at the site of cut and forms a red or white clot  which is made up of fibrin that forms as a result of wound healing.

you are certainly talking about this picture:

a: is the label of the white square, it is showing the  replication fork, formed by helicase (d) ==> so it is the site of dna separation and replication 

b: is a new dna brand that is following directly the replication fork, so it is continuous ==> built continuously from 5' to 3

c: dna polymerase cannot replicate dna on its own, it needs the of their proteins, and one of them plays the role of a clamp which fixes  the dna with the dna template and increases  the processivity of the enzyme. ==>   stops polymerase from falling off the  template.

d: is the enzyme responsible for forming the replication fork (helicase) ==> unwinds and separates dna into two strands

e: is the delayed strand, it is built  in the opposite sense of the helicase, so dna will be built in fragments ==> built  fragments from 5' to 3 joins

and finally f: is the enzyme that builds  the new dna strand (dna polymerase) ==>   adds nucleotides to make a new dna helix.

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i would go with b

cytokinesis occurs after telophase so that eliminates d

and the entire reason for cytokinesis is for cellular reproduction