chapter 5 animation assessment : endomembrane system

most elements of the endomembrane system are connected by:

vesicular trafficking

consider a protein that is targeted to be excreted to the outside of the plasma membrane. where would this protein be located in the endoplasmic reticulum?

in the lumen (inside) of the E.R

consider a protein that is targeted to be excreted to the outside of the plasma membrane. where would this protein be located in the Golgi?

in the lumen (inside) of the golgi

consider a protein that is targeted to be an integral membrane protein on the surface of a cell. it has a specific functional domain (domain x) facing the external environment of the cell. how will this protein be oriented in the E.R?

it will be embedded in the E.R membrane with domain x facing the lumen of the E.R

consider a protein that is targeted to be an integral membrane protein on the surface of a cell. it has a specific functional domain (domain y) facing the cytoplasm of the cell. how will this protein be oriented in the golgi?

it will be embedded in the golgi membrane with domain y facing the cytoplasm of the cell

many cell functions involve communication between cells via molecular signals that must be sent from one cell to be received by a target cell. suppose the signal to be sent is a small protein. where would you expect to find the protein in the golgi?

it would be in the lumen of the golgi

which of the answer choices is not considered to be a part of the endomembrane system? -plasma membrane -endoplasmic reticulum -lysosome -mitochondria -golgi

mitochondria