11. Which of the following triggers the division of activated T lymphocytes?

A. FGF
B. Interleukin 2
C. PDGF
D. Erythroprotein

12. The term, not related to mitosis is

A. gametes
B. chromosomes
C. DNA replication
D. somatic cells

13. What structure forms as a network of protein cables during cell division?

A. Spindle
B. Aster
C. Kinetochore
D. Chromatid

14. A centromere is

A. another name for kinetochore
B. the structure to which microtubules attach
C. a constriction on a chromosome bound to a disk
D. all of the above

15. Which of the following statements about mitosis is incorrect?

A. The daughter nuclei are genetically identical to the parent nucleus
B. Chromosomes separate during anaphase due to the interaction of polar microtubules from opposite poles pushing against each other
C. Chromosomes separate during anaphase when the kinetochore microtubules shorten as they depolymerize
D. Chromosomes move to the metaphase plate using motor proteins, a kind of kinesin, attached to spindle fibers