see this dark spot in the cell this
is the nucleus one of the few organelles
you can see with an inexpensive
microscope
within the nucleus there's an even
darker spot
called the nucleolus and it's found in
eukaryotic cells
welcome to moomoomath and science and
the function of the nucleus
it has been described as the brain of
the nucleus
this structure does not have a
surrounding membrane and it's made up of
proteins
and ribonucleic acids rna it makes up
about 25 percent of the nucleus
its main job is to rewrite ribosomal rna
and combine it with proteins which
results in an
incomplete ribosome if you remember rna
is a single strand and it's composed of
adenine
cytosine guanine and uracil
it's different than dna because remember
dna is double stranded
and it contains adenine cytosine guanine
and thymine these ribosomes
are protein factories found throughout
the cell ribosomes are composed of a
large
and small subunit and each of these
subunits contain their own
ribosomal rna so in summary
the nucleus is a region inside the
nucleus without a membrane
it contains proteins and very important
rna this rna is very important
in the creation of ribosomes the
ribosomes are important
because that's where amino acids are
constructed
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