Question

to make sure you understand the flow of events in the endomembrane system, drag and drop each statement into the correct order. place the first event at the top and the last event at the bottom. mrna is exported from the nucleus, through a nuclear pore. protein synthesis (linking amino acids via peptide bonds) begins in a ribosome. a signal sequence on the new protein binds to an rna - protein particle, which interacts with a receptor on the er membrane. products move through each sac in the golgi, being processed, sorted by destination, and loaded into a vesicle. the protein enters the inside of the er, through a channel. processed proteins and other products move to the golgi from er through connection tunnels. kinesin walks along microtubules to carry vesicles that bud off the golgi to their destination. folding and other processing occurs inside the er. vesicles arrive at their destination and empty their cargo.

Explanation:

Protein synthesis starts with mRNA export from the nucleus. Then synthesis begins in a ribosome. A signal - sequence binds and the protein enters the ER. Folding occurs in the ER. Then products move to the Golgi, are processed and loaded into vesicles. Kinesin transports vesicles and they finally empty their cargo.

Answer:

1. mRNA is exported from the nucleus, through a nuclear pore.
2. Protein synthesis (linking amino acids via peptide bonds) begins in a ribosome.
3. A signal sequence on the new protein binds to an RNA - protein particle, which interacts with a receptor on the ER membrane.
4. The protein enters the inside of the ER, through a channel.
5. Folding and other processing occurs inside the ER.
6. Processed proteins and other products move to the Golgi from ER through 'connection tunnels.'
7. Products move through each sac in the Golgi, being processed, sorted by destination, and loaded into a vesicle.
8. Kinesin walks along microtubules to carry vesicles that bud off the Golgi to their destination.
9. Vesicles arrive at their destination and empty their cargo.