QUESTION 17 Place the following steps in the expression of the lac operon in the order in which each occurs for the first time after a cell is induced. Sigma protein dissociates from RNA polymerase. A peptide bond is formed between the first two amino acids in galactosidase. A phosphodiester bond is formed between two ribonucleotides. RNA polymerase dissociates from the lacA gene. A repressor dissociates from an operator. A ribosome subunit binds to a transcript.

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Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.