cell division
1. What is mitosis? What is
the importance of mitosis?
2. Why in some cases is
mitosis a synonym of
reproduction?
3. What is the importance of
mitosis for the embryonic
development?
4. What are some examples of
organs and tissues where
mitosisis more frequent, less
frequent or practically absent?
5. How does mitosis
participate in the growth of
pluricellular organisms?
6. What is the uncontrolled
mitotic process that occurs as
disease in pluricellular beings
called?
7. Is the internalepitheliumof
the bowelthe same as itwas
one month ago?
8. What is cellular
regeneration? How is mitosis
related to this process?
9. What is cell cycle?
10. Is cell division happening
during the entire cell cycle?
What is interphase?
11.What arethe threeperiods
into which interphase is
divided?
12. In general which phase of
the cell cycle has longer
duration?
13. What are the events that
mark the beginning and the
end of the first interphase
period? What happens within
the cell in this period?
14. What arethe events that
mark the beginning and the
end of these condinter phase
period? What happens in the
cell in this period?
15. What are the events that
mark the beginning and the
end of the third interphase
period? What happens in the
cell in this period?
16. Does mitosis properly
occur before or after the
interphase? Is it a mere “point
of view” issue?
17. Into which periods is
mitosis divided?
18. What are centrioles? In
which type of cell are they
present?
19. What are the main events
of the first mitotic period?
20.What is the mitotic
apparatus?
21. What are the main events
of these condmitotic period?
22. What are the main events
of the third mitotic period?
23. During mitotic anaphaseis
there separation of
homologous chromosomes or
separation of identical
chromatids?
24. What arethe main events
of the final mitotic period?
25. What is the name of the
cytoplasm division in the end
of mitosis? What are the
differences in this process
between animal and plant
cells?
26. Why is it important for
chromosomes to be
condensed during mitosis and
decondensed during
interphase?
27. How does the quantity of
genetic material vary within
the cell during the sequential
phases of the cell cycle?
28. What are the differences
between astral and anastral
mitosis?
29. Can mitosis occur in
haploid (n) cells? And in
triploid cells?
30. Concerning their final
products (daughter cells and
their ploidies) what are the
differences between mitosis
and meiosis?
31. Concerning their biological
function what is the difference
between mitosis and meiosis?
32. For the biological diversity
is mitosis or meiosis the more
important process?
33. What are the respective
ploidies of gamete, zygote and
somatic cells in a species with
gametic meiosis?
34. Why is meiosis important
for the maintenance of the
normal quantity of
chromosomes of a species
with sexual reproduction?
35. What is the difference
between sexual spores and
gametes? Do humans present
sexual spores or gametes?
36. Is the interphase of
meiosis different from the
interphase of mitosis?
37.What arethe two divisions
of meiosis?What arethe main
eventsthat occur in those
divisions?
38. In which meiotic division
does the separation of the
homologous occur? What are
the ploidies of the generated
cells after the end of that
process?
39. In which meiotic division
does the separation of
identical chromatids occur?
After the end of this process
what are the ploidies of the
new cells?
40. How many cellsare made
after meiosis I and meiosis II?
41. What are the periods of
the first meiotic division?
42. In which period of meiosis
does the pairing of
homologous chromosomes
occur?
43. What is crossing over? In
which period of meiosis does
this event occur?
44. What are the “chiasms” of
homologous chromosomes
seen in prophase I?
45. Is there interphase again
between meiosis I and
meiosis II?
46. What are the periods of
the second meiotic division?
47. What are the respective
functions of the separation of
homologous chromosomes
and of the separation of
identical chromatids in
meiosis?
48. During which meiosis
division does ploidy reduction
occur? Does ploidy reduction
occur in mitosis?