Question

1. 1 pts. 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. protein | Ribosome type | Location in endomembrane system (if applicable) --- | --- | --- RNA polymerase (synthesizes RNA during transcription) | | Testosterone synthesizing enzyme | | Amino acid cotransporter (brings amino acids into intestinal cells) | | DNA Polymerase (makes DNA) | | Aldolase (enzyme in glycolysis) | | A mature acid hydrolase that will function as an intracellular peptidase | |

          1. 1 pts. 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.

protein | Ribosome type | Location in endomembrane system (if applicable)
--- | --- | ---
RNA polymerase (synthesizes RNA during transcription) | | 
Testosterone synthesizing enzyme | | 
Amino acid cotransporter (brings amino acids into intestinal cells) | | 
DNA Polymerase (makes DNA) | | 
Aldolase (enzyme in glycolysis) | | 
A mature acid hydrolase that will function as an intracellular peptidase | |

1. 1 pts. 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.

protein | Ribosome type | Location in endomembrane system (if applicable)
— | — | —
RNA polymerase (synthesizes RNA during transcription) | |
Testosterone synthesizing enzyme | |
Amino acid cotransporter (brings amino acids into intestinal cells) | |
DNA Polymerase (makes DNA) | |
Aldolase (enzyme in glycolysis) | |
A mature acid hydrolase that will function as an intracellular peptidase | |

Added by John C.

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