Proteins are what genes code for They do much of the work of

Proteins are what genes code for. They do much of the work of the cell, and as we discussed, there are many kinds of proteins. Each organelle of the cell and the cytosol has proteins that do specific jobs. All proteins are made on ribosomes. If the location in which a protein functions is the cytosol, nucleus, mitochondria or peroxisome then that protein is made on a ribosome that is free in the cytosol. If the location in which a protein functions is the endomembrane system then the protein is made on a ribosome attached to the outside of the rough endoplasmic reticulum. As the protein is made it is forced through a pore so that it ends up inside the RER. For each enzyme listed or described below state the kind of ribosome on which it\'s made (cytosolic or RER). If it\'s made on a RER ribosome, state the final destination of the protein in the endomembrane system.

Solution

Protein

Ribosome Type

Location

Histone

Cytosolic

-

Steroid synthesizing enzymes

Cytosolic

Na K antiporter

RER

Plasma membrane

DNA Polymerase

Cytosolic

Ribosomal proteins

Cytosolic

Galactosyl transferase

Cytosolic

Protein	Ribosome Type	Location
Histone	Cytosolic	-
Steroid synthesizing enzymes	Cytosolic
Na K antiporter	RER	Plasma membrane
DNA Polymerase	Cytosolic
Ribosomal proteins	Cytosolic
Galactosyl transferase	Cytosolic