Download Eukaryotic Cell Structure Quiz #1

Cells are under constant threat from viruses.
When a cell senses that a virus is nearby, it produces antibody
proteins.
Antibodies are large proteins made from thousands of amino
acids joined together and folded into a characteristic “Y”
shape.
Simplified diagram of an antibody:
Virus
Virus
Virus- binding site
The tips of the Y are designed to lock together with the virus.
Virus
Virus
Virus- binding site
Meanwhile, the base of the Y is free to communicate with the
immune system.
Virus
Virus
Virus- binding site
The characteristic “Y” shape of antibodies allow these
proteins to do two jobs at once: blocking viruses and alerting
the immune system that viruses are present.
The eukaryotic cell below has detected a virus nearby. It must
now respond by producing antibodies.
1. Identify the organelle below, and describe its role in the
production of antibodies.
2. Explain why the nuclear membrane is dotted with pores.
The diagram below show antibodies being produced and
shipped out of the cell.
B
A
C
D
3. Identify the organelles labeled “A,” and describe their role
in the production of antibodies.
B
A
C
D
4. Identify the organelle labeled “B,” and describe its role in
the production of antibodies.
B
A
C
D
5. Identify the organelle labeled “C,” and describe its role in
the production of antibodies.
B
A
C
D
6. Identify the structure labeled “D” in the diagram, and
explain how it helps the antibody proteins leave the cell.
B
A
C
D