Week 7 Individual Journal Assignment

10 Biological Term Definitions
1. Gene expression- The process by which the inheritable information in a gene, such as the DNA sequence, is made into a functional gene product, such as protein or RNA. http://en.mimi.hu/biology/gene_expression.html

2. Morphogenesis- Differentiation of cells and tissues in the early embryo which resultsin establishing the form and structure of the various organs and parts of the body. http://medical-dictionary.thefreedictionary.com/morphogenesis

3. Hexokinase- Any group of enzymes that accelerate the phosphorylation of hexoses (as in the formation of glucose-6-phosphate from glucose and ATP) in carbohydrate metabolism. http://www.merriam-webster.com/medical/hexokinase

4. Directed acyclic graph- A directed graph with no path that starts and ends at the same vertex. http://xw2k.nist.gov/dads//HTML/directAcycGraph.html

5. Ontology- A branch of metaphysics concerned with the nature and relations of being. http://www.merriam-webster.com/dictionary/ontology

6. Spliceosome- A ribonucleoprotein complex that is the site in the cell nucleus where introns are excised from precursor messenger RNA and exons are joined together to form functional messenger RNA. http://www.merriam-webster.com/medical/spliceosome?show=0&t=1287369260

7. Mitotic cell cycle- A mitotic cell cycle is one which canonically comprises four successive phases and includes replication of the genome and the subsequent segregation of chromosomes into daughter cells. http://www.yeastgenome.org/cgi-bin/GO/goTerm.pl?goid=0000080

8. Protein biosynthesis- The process in which cells build proteins. http://www.wordiq.com/definition/Protein_biosynthesis

9. TGFβ signaling- the prototype of a large family of secreted peptide growth factors in metazoans. http://www.wormbook.org/chapters/www_tgfbsignal/tgfbsignal.html

10. Glycolysis- the catabolism of carbohydrates, as glucose and glycogen, by enzymes, with the release of energy and the production of lactic or pyruvic acid. http://dictionary.reference.com/browse/glycolysis