the

What is the nucleolus?

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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