1. A molecule of MRNA leaves the
Through a nuclear pore
nucleus
Amino acids are joined together
The polypeptide chain enters the
by peptide bonds at the
rough endoplasmic reticulum
ribosome
The polypeptide travels through
The polypeptide moves through
the rough endoplasmic
the cell in a transport vesicle
reticulum
The polypeptide is processed
The protein molecule ‘buds-off’
into a finished protein molecule
the Golgi body in a vesicle
in the Golgi body
The protein moves through the The protein leaves the cell by
cell in a secretory vesicle exocytosis
The vesicle fuses with the The vesicle fuses with the Golgi
smooth endoplasmic reticulum body
The vesicle fuses with the
nucleus

2. Cells without a true nucleus. The
Prokaryotic cells organisms that have these cells
are the bacteria
This structure is made of a
Cell wall
glycoprotein called murein
This is a structure longer than the
Flagellum (sing)
cell and it can propel the cell (not
Flagella (pl)
always present)
The are of the cytoplasm where a
Nucleoid single circular chromosome is
found
A small circlet of DNA containing
Plasmid
only a few genes
A thick sticky layer outside the
cell wall. It makes bacteria sticky
Capsule/Slime layer
and prevents them drying out
(not always present)
Ribosomes The smaller (70s) version