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Chapter 17: From Gene to Protein
 
Pre-Test
 

Pre-Test


1 .       Beadle and Tatum showed that each kind of mutant bread mold they studied lacked a specific enzyme. Their experiments demonstrated that _____. (Concept 17.1E-Book) [Hint]

 genes carry information for making proteins
 mutations are changes in genetic information
 genes are made of DNA
 enzymes are required to repair damaged DNA information
 cells need specific enzymes in order to function
2 .       The flow of information in a cell proceeds _____. (Concept 17.1E-Book) [Hint]

 from RNA to DNA to protein
 from protein to RNA to DNA
 from DNA to protein to RNA
 from RNA to protein to DNA
 from DNA to RNA to protein
3 .       A gene is usually _____. (Concept 17.1E-Book) [Hint]

 the same thing as a chromosome
 the information for making a polypeptide
 made of RNA
 made by a ribosome
 made of protein
4 .       A template strand of DNA has the sequence 3'-AGCCGTTTACGC-5'. An mRNA transcribed from the DNA will have which of the following sequences? (Concept 17.1E-Book) [Hint]

 5'-UCGGCAAAUGCG-3'
 3'-UCGGCAAAUGCG-5'
 5'-TCGGCAAATGCG-3'
 3'-AGCCGUUUACGC-5'
 3'-AGCCGTTTACGC-5'
5 .       How does RNA polymerase know where to start transcribing a gene into mRNA? (Concept 17.2E-Book) [Hint]

 It starts at one end of the chromosome.
 Transfer RNA acts to translate the message to RNA polymerase.
 It starts at a certain nucleotide sequence called a promoter.
 The ribosome directs it to the correct portion of the DNA molecule.
 It looks for the AUG start codon.
6 .       After an RNA molecule is transcribed from a eukaryotic gene, portions called _____ are removed and the remaining _____ are spliced together to produce an mRNA molecule with a continuous coding sequence. (Concept 17.3E-Book) [Hint]

 operators ... promoters
 exons ... introns
 silencers ... enhancers
 introns ... exons
 promoters ... operators
7 .       Which of the following processes occurs in the cytoplasm of a eukaryotic cell? (Concept 17.4E-Book) [Hint]

 DNA replication
 translation
 transcription
 DNA replication and translation
 translation and transcription
8 .       Protein synthesis, controlled by DNA, requires all of the following except _____. (Concept 17.4E-Book) [Hint]

 ribosomes
 mRNA
 tRNA
 amino acids
 endoplasmic reticulum
9 .       Which one of the following is true of tRNAs? (Concept 17.4E-Book) [Hint]

 Each tRNA binds a particular amino acid.
 tRNAs are extremely small molecules.
 tRNAs carry special sequences known as codons.
 There are four types of tRNA.
 All of the above.
10 .       A mutagen causes _____. (Concept 17.7E-Book) [Hint]

 problems with mitosis
 a change in the base sequence of DNA
 decreased enzyme activity throughout the cell
 decreased permeability of the nuclear envelope
 a reduction in the number of tRNA molecules available for protein synthesis





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