ER and Protein Translation?

[USCTrojan11]

AAMC Bio Practice 6

Translation of antibody proteins in eukaryotic cells is associated with what organelle?

A. Nucleus
B. Mitochondrion
C. Endoplasmic Reticulum
D. Golgi apparatus

Obviously not mitochondrion or golgi apparatus. Why is the the ER? The explanation simply says ER is associated with translation of proteins. I googled that and couldn't find anything. Please help

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[lorenzomicron]

translation is using RNA to make protein from amino acids.
this is done in ribosomes.

sometimes, when ribosomes are translating RNA into proteins, a signal molecule makes the ribosome attach to the ER, where it finishes translation. this is why there is a rough ER.

 

[Charles_Carmichael]

Think about the rough ER. It's called the rough ER is because of all the ribosomes associated with it. And ribosomes are involved in translation. That's the easiest way for me to remember.

 

[USCTrojan11]

Wow fail on my part. I just took biochem last semester and raped that test too. DAMN.

 

[Charles_Carmichael]

Wow fail on my part. I just took biochem last semester and raped that test too. DAMN.

It's okay. We've all had our share of fail moments too. During a practice question when I was studying for the MCAT, I forgot that erythrocytes don't have any organelles and answered a question about aerobic respiration in these cells (wrong, of course).

 

[USCTrojan11]

Nice. Hopefully that doesn't happen during the real test for me. Thanks for the help