BIOLOGY 3 Lecture Notes - Lecture 7: Ribose, Ribosomal Rna, Start Codon
Document Summary
Regulating gene expression: regulating the amount of protein produced by a cell. Hormones: substances that are secreted from specialized glands and travel through the bloodstream to affect their target organs. Growth hormones act on many different organs to increase the overall size of the body. Production of any protein requires the use of the genetic information coded in the dna. Protein synthesis: using the instructions carried by a gene to build a particular protein: genes carry the instructions that dictate how a protein should be built. When the gene is copied, the copy is made up not of dna but of rna. Rna (ribonucleic acid): polymer of nucleotides: sugar in rna is ribose, uracil in place of thymine, single stranded. When a particular cell requires a particular protein, a strand of rna is produced using dna as a guide. Rna copy serves as a blueprint that tells the cell which amino acids to join together to produce a protein.
