BIOL 100 Lecture Notes - Lecture 8: Repressor, Intron, Transfer Rna
Document Summary
List the 3 main parts of a dna molecule. Directs cellular functions (by protein synthesis) and has hereditary material (genes) 1953: wilkins gave crick photo 51, without telling franklin. Francis crick worked with watson to find the double helix structure. Discuss the structure of dna (what is meant by double helix, antiparallel, complementary) Strands are oriented in different directions (antiparallel) 5" to 3". The nucleotide sequence in one strand determines the sequence in other strand, two strands are complementary. Gene- sequence of dna that encodes specific protein, instruction to synthesis a specific protein. Transcription: happens in nucleus, produces rna that is complementary to dna. Translation: occurs in cytoplasm, information from rna is used to make protein. Dna- only hydrogen, a-t, c-g, double stranded, stores rna and protein instructions, transfers info to new cells. Rna- has oxygen and hydrogen, u-a, g-c, single stranded, carries protein encoding instructions, makes proteins, catalyze reactions. Rna (ribonucleic acid)-plays a role in protein production.
