Download Journal Entry #12

Journal Entry #12
Wrappin’ up The Cell
February 2008
DUE ON 3/3
Now that we have explored the organelles of the cell, it is time to think a little deeper and extend
some of our new cellular knowledge. This is also a great way to review for the quiz!
1) Identify which organelle or organelles that you learned about would be BEST at helping the
cell deal with the following situations. Explain why you selected the organelle(s) that you
did. Look to your Cell Study Cards for help!
a) A plant cell has been going through the process of photosynthesis. Which organelle would
be responsible for capturing the sun energy needed for the plant to make food energy?
Which organelle would be responsible for breaking down the excess hydrogen peroxide
that gets produced in the cell as a result of photosynthesis?
b) The muscle cells in a man’s arms are being used to lift weights at the gym. What
organelle would be in charge of creating the energy to make this possible?
c) An animal cell is getting ready to divide and make more cells. Which organelle would help
to organize and separate the genetic material for each of the cells that are going to be
made?
d) The Rough Endoplasmic Reticulum in a cell is producing lots of protein. It packages it
into vesicles that will transport the protein to another part of the cell to be processed.
What organelle of the cell will receive the protein for further modifications and packaging?
e) A cell needs to repair its cell membrane by replacing some of the lipids and proteins in it.
Which organelle would be in charge of processing the materials for making this possible?
2) Create your OWN organelle. Think about all the organelles that you learned about and what
they do for the cell. Are any of the life processes not fully covered by the organelles? Is there
something special that you would like cells to be able to do?
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Draw your organelle.
Describe where in the cell you can find it.
Explain its function and why you thought that it was important that cells
have this additional organelle.
3) Research ONE of the following words or topics. Write a short paragraph that explains the
meaning of the word or topic you selected and its connection to our recent “learnings” about
the cell. CITE WHERE YOU GOT YOUR INFORMATION FROM!
 Phagocytosis
 Autolysis
 How Cells Communicate
 The Fact that Mitochondria and Chloroplasts contain their very own DNA!
The Lipid Bi-layer of the Cell Membrane…Hydrophillic vs. Hydrophobic