1362-SP10-Exam-2-Rev_41079

1362-SP10-Exam-2-Rev_41079 -...

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1) One can infer from the Central Dogma, that different RNA molecules are necessary in order to synthesize DNA from a sequence of amino acids (i.e., protein). A) True B) False 2) In a gene, the presence of a promoter is required A) for transcription to occur. B) for translation to occur. C) for recognition by, and the binding of, RNA polymerase. D) B and C are both correct. A and C are correct E) A and C are correct. 3) Which of the following serves as an "adapter" in protein synthesis and bridges the gap between mRNA and proteins? a. tRNA b. cDNA c. rRNA d. promoter sequences e. DNA
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hat is gene expression? Of what significance is it? CH 17: Gene Expression What is gene expression? Of what significance is it? The genetic make up (i.e., DNA Æ genes) determines (in The phenotypic traits of an organism are due in rge part to the functioning (directly or indirectly) large part) the phenotypic traits one possesses. large part to the functioning (directly or indirectly) of 1000’s of different proteins. ow are genes and proteins connected? How are genes and proteins connected? Genes contain the information (genetic code) that is converted into a specific sequence of amino acids to form polypeptides. (Transcription & Translation) Gene (DNA) AGCCTAAGTACAAA………… Promoter Transcription NA polymerase Polypeptide formed 3’ 5’ UCGGAUUC AUG UUU ………… mRNA RNA polymerase Translation tRNAs, Ribosomes 5’ 3’
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Central Dogma (The Flow of Information in Life) Transcribe genes in DNA using… NA olymerase; bind to tRNA (anticodons, provide amino cids) RNA polymerase; bind to promoter in gene & synthesize… 5’ to 3’ mRNA (codons) acids) Ribosomes (rRNA + proteins): site of protein synthesis Both DNA strands contain coding information Not all genes code for proteins catalyze peptide bond formation Protein processing l ib ft i (b t i ) Errors in DNA Æ mutations Polyribosome formation (bacteria)
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4) The transcription of the DNA sequence: 5’ TTAGAATCCCTGCATAA 3’ ould e translated into what correct amino acid sequence?
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This note was uploaded on 03/09/2010 for the course BIO 1362 taught by Professor Knapp during the Spring '10 term at University of Houston-Victoria.

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1362-SP10-Exam-2-Rev_41079 -...

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