Thursday, September 18, 2008

Unit One Lab Project-Build a Cell

My Lab Project: Part One
Building a basic cell was fun, challenging, and interesting! I actually learned alot about, and semi-memorized, the parts to a human cell by putting the pieces together. below is a picture of the items I used for my cell model:

I used a large serving plate for my cell structure and the biscuit dough was great cytoplasm, as it helped hold all the other pieces in place. On my cell model I include the main components,membrane (yellow icing) cytoplasm (biscuit dough), endoplasmic reticular (rough and smooth) made with (green licorice and gummi nerds),ribosomes (cookie dots), golgi body (green and white folded paper), mitochondrion (rice cakes and gummi worms), nuclear membrane (orange peel), nucleolus (big marble), Lysosome (red gummi bears, nucleus (orange), and vacuole (rolled gummi worms.
*see below for completed basic cell.


The 3-D effect and also the colors made the working pieces make more sense to me.
The workings of a cell:
Inside the nucleus is stored the DNA blue print for an entire human being. The cytoplasm is the jelly like fluid that helps protein and enzyme synthesis and also is necessary for the processes of RNA/mRNA, and tRNA. The mitochondrion is where energy for the cell is created, and the ribosomes are where the amino acids are processed and the proteins are synthesized.The endoplasmic reticulum (2) and the ribosomes are important in the DNA/RNA replication and transcription/translation processes. Cell replication is constantly going on in a living body, the average healthy cell divides in to a new duplicate copy approximately 60-70 times before it dies! Each and every one of us literally has trillions of living cells in our bodies and old ones are constantly dying and new ones are being formed!

Lab Project;Part two

The second part of my lab project was to show that I understand DNA replication and the workings of DNA, RNA, tRNA, mRNA. The processes of Transcription (which takes place within the nucleus) and Translation (which occurs OUTSIDE the nucleus in the cell cytoplsm) are when the DNA/RNA strands are in process of completion and they need the amino acids/proteins to go through synthesis and combining to complete the steps in new cells being formed. My first picture shows DNA Double Helix, which looks like a twisted ladder. The DNA Double Helix replicates into new DNA by keeping one base (parental) and replicating the other one brand new (daughter strand). All of this takes place in the nucleus up until this part of the process.


DNA EXIST IN NUCLEUS-

PROTEIN SYNTHESIS OCCURS IN CYTOPLASM-


FIRST mRNA TAKES COPY OF DNA BLUEPRINT TO CYTOPLASM-


NEXT 20+ t RNA MOLECULES BRING ABOUT PROTEIN SYNTHESIS ALSO IN CYTOPLASM-



TRANSCRIPTION-
STRAND OF (mRNA) FORMS THAT IS COMPEMENTARY TO PART OF DNA (INSIDE NUCLEUS)-
THIS DNA “COPY” TRAVELS OUT SIDE NUCLEUS TO RIBOSOMES TO BECOME PROTEIN (SYNTHESIS)-
TRANSCRIPTION BEGINS WITH ENZYME RNA POLYMERASEOPENING DNA HELIX (IN NUCLEUS) THIS IN TURNS CREATES (m RNA) AS EXACT COPY OF DNA BASES ( IT IS PROCESSED AND THEN OUT IN CYTOPLASM IT GOES!)-



TRANSLATION-
PROCESS OF TRANSLATION IS NECESSARY FOR PROTEIN SYNTHESIS-
SEQUENCE OF NUCLIOTIDES IS TRANSLATED INTO SEQUENCE OF AMINO ACIDS (OUTSIDE NUCLEUS, IN CYTOPLASM)-
BASES OF DNA AND (mRNA) MUST “CODE” FOR AMINO ACIDS FOR PROCESS TO WORK!
TRANSCRIPTION BEGINS WITH ENZYME RNA POLYMERASEOPENING DNA HELIX (IN NUCLEUS) THIS IN TURNS CREATES (m RNA) AS EXACT COPY OF DNA BASES ( IT IS PROCESSED AND THEN OUT IN CYTOPLASM IT GOES!)

Working on the second part of "Building A Cell" was difficult for me! Some of the process didn't make sense to me or else it seemed extremely difficult for me to grasp. The time and effort I put into piecing together the nucleus "how it all works" and the transcription/translation "how it all works", I had a much better basic knowledge of what happens at a cellular level in our bodies.

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