What Two Cellular Organeles are thought to have once been independent organisms but are noe endosymbiants?
A.) Nucleus & Endoplasmic Reticulum. B.) Chloroplast & Mitchondria. C.) Vacuoles & Ribsomes. D.) Transposons & Golgi Apparatus
What Two Cellular Organeles are thought to have once been independent organisms but are noe endosymbiants?
A.) Nucleus & Endoplasmic Reticulum. B.) Chloroplast & Mitchondria. C.) Vacuoles & Ribsomes. D.) Transposons & Golgi Apparatus
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1A. Which of the following statements about the endomembrane system is/are correct? (select all that apply)
| A. | Secreted proteins are inserted into the ER as they are being made by ribosomes. |
| B. | the nucleus is surrounded by two phospholipid bilayers. |
| C. | "Free" ribosomes attach to the endoplasmic reticulum. |
| D. | Secreted proteins are moved from the ER to the Golgi by ribosomes |
1B. Place these components of the endomembrane system into the correct order in respect to when they first function in the production of a secreted protein.
| Endoplasmic Recticulum (ER) | |
| Riibosome | |
| Nucleus | |
| Transport Vesicle | |
| Cell Membrane | |
| Golgi Apparatus |
You study a transmembrane protein that is trafficked through theendoplasmic reticulum but ultimately âlivesâ in the plasmamembrane. Suppose the domain of this protein which is exposed onthe outer face of the endoplasmic reticulum membrane was covalently(and specifically) labeled with a fluorescent dye in a living cell.When the protein is distributed among cellular compartments, wherewould you expect the dye to be located?
Question 7 options:
A) The dye will be on the outer face of the endoplasmicreticulum, on the inner face of the Golgi apparatus, and on theextracellular face of the plasma membrane.
B) The dye will be on the inner face of the endoplasmicreticulum, on the inner face of the Golgi apparatus, and on theintracellular face of the plasma membrane.
C) The dye will be on the outer face of the endoplasmicreticulum, on the outer face of the Golgi apparatus, and on theintracellular face of the plasma membrane.
D) The dye will be on the outer face of the endoplasmicreticulum, on the outer face of the Golgi apparatus, and on theextracellular face of the plasma membrane.
Eukaryotic cells manufacture fibrous cytoskeletal proteins thatfunction in the cytoplasm to maintain cell shape by providingstructural support, move materials within the cell, and move theentire structure. Which of the following predictions about proteinsynthesis, processing, and trafficking applies to the general classof cytoskeletal proteins?
Question 8 options:
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