California 7th Grade State Science Standards: by 5VBfbV

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									California 7th Grade State Science Standards:                  NAME ____________________
           Cell Biology: 1a; 1b; 1c; 1d                        PERIOD ___________________
           Investigation and Experimentation: 7d               DATE ______________________

                      PLANT CELL MODEL PROJECT AND ESSAY
                 PROJECT AND ESSAY DUE ON Tuesday, December 7, 2010

1. You will be making a model of a PLANT CELL using the paper container and parchment
paper provided by your teacher. The container represents the cell wall of a plant cell and the
parchment paper depicts the cell membrane. The cell membrane must cover the inside surface of
the cell wall. Both of these structures may be colored, if you like.
2. You must include any other eight (8) of the major plant cell organelles, in addition to the
cell membrane and cell wall. (ten all together) Use pages 88-94 in your science book for
reference, as well as your cell book notes. The cytoplasm does not count as an organelle.
My 10 cell organelles are: 1.________________________2.____________________3._____________________
4.________________________5.______________________6.________________________
7._______________________ 8.________________________________ 9. cell membrane 10. cell wall
3. Cell organelles must be natural items found in nature (living or formerly living things
such as: flowers, leaves, seeds, stems, etc.). These items may be found in and around your
home and neighborhood. Do NOT use any food items EXCEPT uncooked pasta shells. DUE TO
MULTIPLE NUT ALLERGIES, NO NUTS MAY BE USED IN YOUR PLANT CELLS.
4. Carefully choose a natural item which reflects the appearance of each cell organelle.
Remember, some organelles are very small, some are very large; some have very unique shapes;
some are very numerous in the cell, and for some only one of them is found in each cell. The
model must accurately represent a plant cell and its structures.
5. You may color all, some or none of the organelles. But, each of the ten cell organelles,
including the cell membrane and the cell wall MUST BE LABELED. You may label the items
directly, or you may number them and attach a key. Make sure the organelle names are
spelled correctly.
6. You may glue, tape, thread, etc. your organelles to your cell membrane and cell wall.
Remember 3-D effect and appearance is important.
7. Your cell project must include a one-page (minimum) essay written in your own words;
legibly explaining:
(a) The purpose/function of each of the ten cell organelles, including the cell membrane and
the cell wall you have chosen.
(b) Why each of the natural items was chosen to represent each specific structure.
(c) Choose one cell organelle, and devise an analogy between that cell part and an
    everyday item (as we discussed in class). Write a paragraph included in your essay
    explaining that analogy.
  8. Plant Cell Project and Essay MUST be turned in on or before Tuesday, December 7, 2010
for full credit. If for some reason you are unable to be in school December 7th,
your project must be delivered to the school by the end of the school day on the 7th.
                         CRITERIA FOR GRADING CELL PROJECT

CRITERIA FOR PLANT CELL:
  For EACH of the ten cell organelles:(cell membrane, cell wall; and any other 8 organelles)

                                                         POINT VALUE         TOTAL POINTS
         1. Appropriate use of materials to                   3 points/ each
            depict organelle (appropriate size, shape and     organelle        = 30
            amount of each organelle in cell)

       2. Appropriate label on cell model or                 2 points /each   = 20
           on attached Key for each organelle;                organelle
          organelle name spelled correctly
                                           Total Points for the Plant Cell:  = 50 points
CRITERIA FOR ESSAY:
                                                       POINT VALUE          TOTAL POINTS
       1. One-page (minimum)                                 2 points          = 2
           typed: double-spaced; 12 font; 1” margins
                             OR
          hand-written: clearly written in blue/ black ink

         2. Naming of each organelle and an
            explanation of each organelle’s function (20)       2 points/
                                                               each organelle    =20
         3. Explanation of why that specific natural
            item was chosen for that particular                1 point/
            organelle (10)                                     each organelle    =10

        4. One and ONLY ONE Cell analogy:
           This paragraph must include:
              A. The one Cell part being compared              1 point           =1
              B. Everyday item it is being compared to         2 points          =2
              C .Sentences describing the similarities
              (For Example: The nucleus of a cell is similar
                  to the brain in our body because…)           6 points          =6
              D. Concluding sentence                           1 point           =1
       5. Proper grammar and correct spelling                  4 points          =4
       6. Creativity/neatness                                  4 points          =4

                                                    Total Points for the Essay: = 50 points

               TOTAL POINTS FOR THE ENTIRE PROJECT: = 100 POINTS

								
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