1.1.1 - Cell Structure (Protein Synthesis) Part 6.1

Question 1

Where are the instructions found for making proteins?

Answer 1

They are found in the DNA in the nucleus.

Question 2

The nucleus copies the instructions in the DNA on to a molecule. What is this molecule called?

Answer 2

mRNA

Question 3

The mRNA then attaches itself to another organelle attached to the RER.

1. What is the name of this organelle?
2. What does this organelle do with mRNA?

Answer 3

1. Ribosome
2. The ribosome reads the instructions and starts to assemble the protein.

Question 4

The assembled protein inside the RER is transported.

1. What is it transported in?
2. Where is it transported to?

Answer 4

1. The protein is transported in vesicles.
2. This is transported to the Golgi apparatus.

Question 5

The Golgi apparatus recieves the protein from the RER.

1. What does it with to the protein?
2. Where is the protein transported afterwards?

Answer 5

1. The Golgi apparatus packages and modifies the protein. It may add a sugar molecule on to the protein.
2. The protein is then transported in a vesicle to the cell surface membrane where it may be placed or secreted from the cell surface membrane.