Match the key learning to the process or investigation statement. a. one-gene/one-enzyme hypothesis b. a protein has a particular sequence of amino acids f. triplet hypothesis g. translation c. messenger RNA hypothesis d. stop code e. the genetic code is redundant h. RNA i. Transcription j. Start code 53. Only nucleotide variations adding or removing three nucleotides produced a functional protein. 54. ribosomes in the cytoplasm organize MRNA and tRNA to combine amino acids into a polypeptide 55. nucleotides are made of ribose, phosphate and one of the nitrogenous bases: adenine, cytosine, guanine and uracil 56. Jacob and Monod proposed that DNA's genetic message was copied on complementary RNA.

The role of transfer RNA (tRNA) is to match a codon (3 bases) in mRNA sequence to:   A. An amino acid   B. A peptide bond   C. An R group   D. A start codon

Use the model to answer the following questions. 1. Which of the arrows (1 or 2) represents transcription and which represents translation? How do you know? Ribosome 2. Label the amino acid chain in the model. Why did you pick this structure to represent your amino acid chain? 3. Label everywhere you see MRNA in the model. Explain at least 2 ways you know this structure represents MRNA?