Does it seem fortuitous that most of the successfulphysicists who helped unravel the secrets of atomicstructure (Thomson, Rutherford, Bohr, Geiger, andMoseley) worked either together or in close proximityin England? Why do you suppose we dont hearnames of physicists working on this idea in other Europeancountries or in the United States?
Lecture 4 learning objectives 1. Describe the structure of a gene A small segment of a chromosome wound around a histone protein that codes for a unique protein. The nucleotide sequence of the gene codes for a particular sequence of amino acids which will bend and fold into a unique protein. 2. Describe the sequence of event in the process of transcription of a gene and how it may be regulated RNA polymerase binds to the promoter region (start point) of the DNA, splits apart the double helix and begins mRNA synthesis. This step is called. Initiation. The polymerase unwinds then rewinds the DNA while adding to the mRNA with complementary bases from the cytoplasm. This step is called Elongat WHen a termination signal is reached RNA polymerase and mRNA are released. This step is calle ermination It then leaves the nucleus via a nuclear pore. DNA RNA A U T A C G G C 3. Describe the sequence of events in translation to form a protein A ribosomal (composed of a large and small ribosomal subunit) meets a mRNA in the cytoplasm of the cell. An initiator tRNA with the code UAC carrying the amino acid methionine meets and start codon AUG in the mRNA. This step is called. Initiation. Amino acids are added one at a time being being attached at site A. As the the mRNA slides through the ribosome the tRNA from site