Nucleus Problem
Wow, another exciting day is about to begin. Sometimes I get so tired of
being
the brains of this whole operation, but it is fun to be the boss and
give the
orders. Let’s examine a typical day: I am the nucleus. My life is
very
complicated because there are constantly things going on and I hardly
have time
to talk to you. But since I started telling you about myself then I
might as
well finish it up. I am the most important organelle in this body
that I am in;
I am the brain of the cell. My primary purpose is to
control the actions inside
the cell. I contain the RNA and the DNA of the
cell, and both of these work
together to build and control the cell. I also
produce these things called
proteins and they are carried by the endoplasmic
reticulum to other parts of the
cell. The proteins are messengers and they
give the orders to the cells. I am
studded with pores that control what comes
into the cell and what leaves the
cell. These pores are filled with a large
nuclear protein complex and these make
barriers and plugs because the NPC is
so big. Bigger molecules that want to
enter this cell have to go through the
central part. The nucleolus that is in me
is the site for RNA and the
packaging of ribosomal subunits for export to the
cytosol. The DNA strand is
sometimes a very long molecule, and sometimes it
needs to be compacted to fit
into a certain spot. It can be reduced in size by
rapping it around a
nucleosomes arrangement of histone proteins. This can result
in the DNA
strand to be reduced so it will fit in the space. Well, can’t talk
any longer
but it was nice to take a
break.