-The making of the protein begins with the info in the DNA
-Genes describe how to make proteins by putting the correct amino acids into a long chain
- RNA strand is made from unzipping DNA strand and making a copy, which can be sent outside of the nucleus - messenger RNA
- The mRNA is sent to a ribosome, which assembles the proteins, by translating the genetic information.
-mRNA contains information in sets of 3 nucleotides. Each set is a code for a specific amino acid
-the specific amino acids are then brought in and joined toghether by the tRNA.
-the tRNA matches up the correct amino acids, just as DNA match up
- Ribosomes will keep reading and stringing toghether the amino acids to make a protein.
PROTEIN/LIPID/SECRETION
-The Endoplasmic Reticulum produces many of the cells proteins and lipids (proteins make on the Rough ER, which contain ribosomes), these proteins and lipids travel along the smooth and rough ER, which change the modify the molecules
- To transport them to their needed locations, vesicles bound off form the ER
- The vessicle delivers it's cargo to the golgi apparatus, by fusing with the golgi
-The golgi then modifies and packages the proteins/lipids
- Vesicles then move the protein/lipds out of the cell by fusing with the cell membrane and releasing their contents outside.
Nerd4Lyfe
Tuesday, 28 February 2012
Friday, 24 February 2012
1. Nucleolus - Site of genes for RNA synthesis. Assembles ribosome's
2. Nucleus - Control center of cell. Directs protein synthesis and cell reproduction
3. Ribosome - Sites for protein synthesis. Reads RNA code and translates it into an amino acid sequence
4. Vacuole - Stores water, sugar, ions and other substances
5. Rough ER - Has ribosome's. Proteins are synthesized here.
6. Golgi Body - Packages proteins for export from cell. Post office of cell
7. Cell Membrane - Provides protection and import and export of the cell
8. Smooth ER - Packages proteins for cell transportation. Detoxify drugs in liver cells . Lacks ribosome's.
9. Mitochondria- Power house of cell. Provides ATP for cellular energy
10. Lysosomes - Digests worn out organelles . Packages of digestive enzymes
11. Cytoplasm- The material inside the cell that surrounds the organelles
12. Peroxisome - Produce hydrogen peroxide because they use oxygen to break down molecules.
13. Centriole - Helps the chromosomes to separate during cell division.
2. Nucleus - Control center of cell. Directs protein synthesis and cell reproduction
3. Ribosome - Sites for protein synthesis. Reads RNA code and translates it into an amino acid sequence
4. Vacuole - Stores water, sugar, ions and other substances
5. Rough ER - Has ribosome's. Proteins are synthesized here.
6. Golgi Body - Packages proteins for export from cell. Post office of cell
7. Cell Membrane - Provides protection and import and export of the cell
8. Smooth ER - Packages proteins for cell transportation. Detoxify drugs in liver cells . Lacks ribosome's.
9. Mitochondria- Power house of cell. Provides ATP for cellular energy
10. Lysosomes - Digests worn out organelles . Packages of digestive enzymes
11. Cytoplasm- The material inside the cell that surrounds the organelles
12. Peroxisome - Produce hydrogen peroxide because they use oxygen to break down molecules.
13. Centriole - Helps the chromosomes to separate during cell division.
Wednesday, 22 February 2012
I'm sorry this is sooo inappropriate, but funny. Every thing with Howard's face is funny
Smooth Endoplasmic Reticulum is a network of tubules and extension of nuclear membranes. They lack ribosomes. One of their functions consits of packaging proteins for transport within the cell.
Rough Endoplasmic Reticulum have ribosomes attached to their surface that synthesize proteins for the cell. Rough ER transports these proteins to the regions in the cell where it is needed.
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