Post lab write-up
Lab 1 create a cell
This is a basic model of a cell that shows many of the components of a cell and another model that represents mitosis (cell division)
The products I chose to use were:
1. A foam half circle I chose this because I believe it represents the selective permeability of a cell membrane. The cell membrane in a functioning cell is what keeps the organelles inside the cell and also protects it from the outside environment. The process by which the cell lets organelles out of the cell and certain things in, is known as selective permeability.
2. Vanilla Pudding Forms the cytoplasm; I used pudding because it seemed to me like the semi-fluid description of cytoplasm in the book. The function of the cytoplasm is to hold the organelles in place.
3. Nucleus The nuclear envelope, nucleus and nucleolus were all formed out of model magic because I felt that as important as the nucleus is in the cell, I wanted to have a clear depiction of it. The nucleus is where DNA is stored in the cell.
4. Endoplasmic Reticulum I formed the rough endoplasmic reticulum out of a pipe cleaner, due to the fact that there are ribosomes lining the outside of it. The function of the rough ER is to perform protein synthesis. The smooth Endoplasmic reticulum is a continuum of the rough ER it is not studded with ribosomes.
5. Golgi apparatus for this I used white and brown modeling clay shaped in circles to show the “stack of pancakes” design. The function of the Golgi apparatus in the cell is to modify the proteins and lipids that are received from the ER to make them useful in other portions of the cell.
6. Lysosomes and vesicles for these two I used mini M&M’s to show the shape. The function of a lysosome in the cell is to digest macromolecules to make it possible for them to pass through the cell membrane. A vesicle stores a substance and transports it to the membrane of a cell for release.
7. Mitochondria For the mitochondria I used red hots cut in half to show the inside of the organelle. The function of the mitochondrion is cellular respiration.
8. Cilia and Flagella for the cilia and flagella I used modeling clay rolled into thin hair like structures. The functions of cilia and flagella are mainly movement of the cell
In the second set of photographs I showed DNA and the formation of mRNA from that DNA and also the four phases of mitosis; prophase, where the duplicated chromosomes are visible and the nucleus has disappeared. Metaphase, when the spindle fibers attach to the chromatids. Anaphase, where the chromatids part and become daughter chromosomes the cleavage furrow begins to appear. Finally telophase, where the daughter cells are forming individually and the cleavage furrow is more visible.
In this lab it becomes more clear how complex a cell is and how incredible the process of cell division is. I feel that I have learned the basic structure of a cell and have begun on a journey towards an understanding in the complexity of cells and cell division.
Lab 1 create a cell
This is a basic model of a cell that shows many of the components of a cell and another model that represents mitosis (cell division)
The products I chose to use were:
1. A foam half circle I chose this because I believe it represents the selective permeability of a cell membrane. The cell membrane in a functioning cell is what keeps the organelles inside the cell and also protects it from the outside environment. The process by which the cell lets organelles out of the cell and certain things in, is known as selective permeability.
2. Vanilla Pudding Forms the cytoplasm; I used pudding because it seemed to me like the semi-fluid description of cytoplasm in the book. The function of the cytoplasm is to hold the organelles in place.
3. Nucleus The nuclear envelope, nucleus and nucleolus were all formed out of model magic because I felt that as important as the nucleus is in the cell, I wanted to have a clear depiction of it. The nucleus is where DNA is stored in the cell.
4. Endoplasmic Reticulum I formed the rough endoplasmic reticulum out of a pipe cleaner, due to the fact that there are ribosomes lining the outside of it. The function of the rough ER is to perform protein synthesis. The smooth Endoplasmic reticulum is a continuum of the rough ER it is not studded with ribosomes.
5. Golgi apparatus for this I used white and brown modeling clay shaped in circles to show the “stack of pancakes” design. The function of the Golgi apparatus in the cell is to modify the proteins and lipids that are received from the ER to make them useful in other portions of the cell.
6. Lysosomes and vesicles for these two I used mini M&M’s to show the shape. The function of a lysosome in the cell is to digest macromolecules to make it possible for them to pass through the cell membrane. A vesicle stores a substance and transports it to the membrane of a cell for release.
7. Mitochondria For the mitochondria I used red hots cut in half to show the inside of the organelle. The function of the mitochondrion is cellular respiration.
8. Cilia and Flagella for the cilia and flagella I used modeling clay rolled into thin hair like structures. The functions of cilia and flagella are mainly movement of the cell
In the second set of photographs I showed DNA and the formation of mRNA from that DNA and also the four phases of mitosis; prophase, where the duplicated chromosomes are visible and the nucleus has disappeared. Metaphase, when the spindle fibers attach to the chromatids. Anaphase, where the chromatids part and become daughter chromosomes the cleavage furrow begins to appear. Finally telophase, where the daughter cells are forming individually and the cleavage furrow is more visible.
In this lab it becomes more clear how complex a cell is and how incredible the process of cell division is. I feel that I have learned the basic structure of a cell and have begun on a journey towards an understanding in the complexity of cells and cell division.
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