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Biology - Chapter 13

Terms in this set (7)

10. Which of the following statements about the genetic code is true?
A). A codon can specify more than one amino acid.
B). Every codon specifies a different amino acid.
C). Some codons specify the same amino acid.
D). Some codons have no function at all.
C). Some codons specify the same amino acid.
29. Blocking gene expression in eukaryotes with microRNA strands is called RNA...
A). transcription
B). translation
C). interference
D). digestion
C). interference
1. How does RNA differ from DNA?
A). RNA contains uracil and deoxyribose.
B). RNA contains ribose and thymine.
C). RNA contains uracil and ribose.
D). RNA contains adenine and ribose.
C). RNA contains uracil and ribose
2. How would the DNA sequence GCTATA be transcribed to mRNA?
A). GCUAUA
B). CGATAT
C). CGAUAU
D). GCUTUT
C). CGAUAU
3. Which of the following codons signifies the end of translation?
A). CAA
B). UGA
C). AUC
D). CCA
B). UGA
5. In the lac operon, the promoter is...
A). exons spliced together after introns are removed
B). introns spliced together after exons are removed
C). a region of DNA that has specific base sequences
D). long pieces of RNA shortened by the Dicer enzyme.
A). exons spliced together after introns are removed
6. Promoters are...
A). genes that code for individual proteins
B). proteins that bind with DNA and prevent transcription
C). DNA sequences near operons that regulate transcription
D). small molecules that bind with repressor proteins
C). DNA sequences near operons that regulate transcription
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