What is the nucleus?

largest organelle in eukaryotic cells that contain most of the genes and chromatin

What is the nucleus enclosed by?

the nuclear envelope

What is the nuclear envelope?

1. 2 woven membranes 2. lined with proteins 3. perforated with pores 4. lined by the nuclear lamina

Why is the nuclear envelope perforated with pores?

to regulate entry and exit

What is the nuclear lamina?

protein filaments that help maintain the shape

What is chromatin?

DNA + Proteins

What are chromosomes?

Organized DNA

How many chromosomes do humans have?

46

What are ribosomes?

rRNA with proteins that come together as 2 subunits

What do free ribosomes do?

they are suspended in the cytosol for function within the cytosol

what do bound ribosomes do?

attached to the Endoplasmic Reticulum for insertion into membrane or export from cell