Name: ________________________________________
Period: _______
Overview of Protein Synthesis & the Endomembrane System
Part I: Organelle Review
Review the nucleus and the various structures that make up the endomembrane system by matching each prhase at the
right with the structure from the list on the left. Answers can be used more than once.
A. Nucleus
______ 1. Lipids manufactured here
B. Transport vesicle
______2. Small structure that makes protein
C. Central vacuole
______3. Contains chromatin
D. Smooth ER
______4. Sac of enzymes that digest things
E. Lysosome
______5. Carries secretions for export from cell
F. Golgi apparatus
______6. Breaks down drugs and toxins in liver
G. Rough ER
______7. Makes cell membranes
H. Contractile vacuole
______8. Cell control center
I.
______9. Numerous ribosomes give it its name
Ribosome
_____10. “Ships” products to cell membrane, outside or other organelles
_____11. May store water, needed chemicals, wastes, pigments in plants
_____12. Buds off from Golgi apparatus
_____13. Proteins made and modified here fore secretion from cell
_____14. Pumps out excess water from some cells
_____15. Nonmembranous organelle
_____16. Takes in transport vesicles from ER and modifies their contents
_____17. Digests food, wastes, foreign substances
_____18. Surrounded by double layer of membrane with pores
_____19. How proteins, other substances get from ER to Golgi
_____20. Stores calcuim in muscle cells
_____21. Marks and sorts molecules to be sent to different destinations
_____22. Buds off lysosomes
Part II: Endomembrane System
1. Label the endomembrane system on this diagram. Include: rough ER, smooth ER, Golgi apparatus, lysosome,
nuclear envelope, transport vesicles and plasma membrane.
2. Trace the path of a protein from its site of manufacture to the side of the cell with a red arrow.
3. Trace the path of a protein incorporated into a lysosome with a blue arrow.
4. Trace the path of a protein incorporated into the plasma membrane with a green arrow.
5. Trace the path of a lipid secreted from the cell with a yellow arrow.
Part III: Review
1. To enter or leave a cell, substances must pass through:
a. The Golgi apparatus
b. A ribosome
c. The nucleus
d. The plasma membrane
2. You would expect a cell with an extensive Golgi apparatus to
a. Make a lot of ATP
b. Secrete a lot of material
c. Move actively
d. Store large quantities of food
3. Which of the following correctly matches an organelle with its function?
a. Nucleus – cellular respiration
b. Ribosome – manufacture of lipids
c. Lysosome – movement
d. Central vacuole – storage
4. Which of the following stores calcium, important in muscle contraction?
a. Smooth ER
b. Golgi apparatus
c. Contractile vacuoles
d. Rough ER
5. Of the following organelles, which group is involved in manufacturing substances needed by the cell?
a. Ribosome, rough ER, smooth ER
b. Vacuole, rough ER, smooth ER
c. Smooth ER, ribosome, vacuole
d. Rough ER, lysosome, vacuole
6. A researcher made an interesting observation about a protein made by the rough ER and eventually used to
build a cell’s plasma membrane. The protein in the membrane was actually slightly different from the protein
made in the ER. The protein was probably changed in the:
a. Golgi apparatus
b. Smooth ER
c. Nucleus
d. Mitochondria
7. Explain the advantages eukaryotic cells derive from being compartmentalized by many internal membranes.