Biology Questions and Answers
- How does mitosis
participate in the growth of
pluricellular organisms?
All pluricellular bincrease in quantity of their cells. Thiseings grow with the (^)
increase is pr(although some oduced by mitosistypes of growth occur (^)
by cellular hypertrophy or by deposition
of substances in interstitial spaces).
- What is the uncontrolled
mitotic process that occurs as
disease in pluricellular beings
called?
Uncontrolled mitotic cell division is
called neoplasia. Neoformation of new stranplasia (thege tissues) (^)
occurs when a cell suffers mutation in
its genetic material, loses tcontrol its own division and the failurhe ability toe is (^)
transmitted to its descendants.
Cancers are malignant neoplasias. The
term malignacells can disseminate to dnt means that neoplasticistant sites
invading other organs and tissues.
Neoplasiasdisseminate to d whose cells cannotistant sites are (^) called
benign neoplasias.
- Is the internal epithelium of
the bowel the same as it was
one month ago?
The internal epithelial coveriintestine acts as protective bng of thearrier and (^)
also as mThe traffic of eans ofingested nutrient absorption.material inside (^)
the intestinal lumen is very intense and
the consequent tissue damage requires
incessantcell division. Th epithelial renovation throe tissue renovation isugh
completed in two to three days and is
made by mitosis.
- What is cellular
regeneration? How is mitosis
related to this process?
Some tissues are able to regenerate
when injured. The liver, for example,regenerates when small pieces of
hepatic tissue arnew tissues in fracture e removed, bones makeregions, etc.
Some animals, like planarias, are
capable of regenerating when sectioned. In tissue regenerationtheir bodies (^)
cellular proliferation happens by mitosis.
- What is cell cycle?
Cell cycle, or mitotic cycle, is the time
period that bcreated and finishes when it is dividegins when the cell is (^) ed
by mitosisThe cell cycle creatin is divided into integ two daughter cells.rphase (^)
and the mitotic phase.
- Is cell division happening
during the entire cell cycle?
What is interphase?
Cell division pmitotic phase of the cell cycle. Duringroperly occurs during the
interphase ppreparation to crocesses that are ell division take a (^) place,
like the duplication of DNA and
centrioles. Interphase is the preceding
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