10. Chromosomes line up in the middle of the cell during what phaseof the cell c

Question

10. Chromosomes line up in the middle of the cell during what phaseof the cell cycle?
11. When is DNA replicated in the cell cycle?
12. Duplicated chromosomes are attached to spindle fibers by astructure called the
    ___________________.
13. Programmed cell death is called _____________, is initiated byinternal enzymes
   called ______________, which causes the cell to_________ out which is a signal
   to ___________________ to engulf them for______________.
14. A bacterial cell can divide in 20 minutes under optimalconditions, while adult
   mammalian cells take about 20 hours. Why is there sucha difference in time?
15. Why is meiosis called a nuclear reduction division process?
16. Do prokaryotes go through a meiosis process? Why or why not?

Explanation / Answer

11. s phase 12. centromere 13. lysis, lysosomes, die, phagocytes, digestion. (pretty sure on this one) 14. The mammalian cell is eukaryotic, has a nucleus, and ismore complex in relplication, it goes through mitosis. Aprokaryotic bacterial cell only has a nucleoid and reproducesthrough binary fission a much easy process compared tomitosis. 15. because the original diploid cell halves its geneticmaterial giving one unreplicated set of genes to four daughtercells in the case of sperm, and haploid egg cell in the case ofoocytes. 16. No they go through binary fission which is simplereplication of the nucleoid, and then a quick split of the cell,however change in the the DNA of the cell can occur from plasmidsas well as conjugation through sex pili with another bacterialcell.
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