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Which event occurs during the elongation stage?


A) ​Peptide bonds form.
B) ​Free amino acids bind to the mRNA binding site.
C) ​Anticodons bind to complementary codons.
D) ​A stop codon enters the ribosome.
E) ​Peptide bonds form, and anticodons bind to complementary codons.

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The portion of the DNA molecule that is translated is composed of


A) ​introns.
B) ​anticodons.
C) ​exons.
D) ​transcriptions.
E) ​exons and transcriptions.

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The process of gene expression includes two steps: ____________________ and ____________________.

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​transcrip...

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During the termination stage


A) ​a start codon enters the ribosome.
B) ​release factors separate the ribosomal subunits.
C) ​mRNA attaches to the ribosome and the polypeptide chain.
D) ​ribosomal subunits join.
E) ​a stop codon enters the ribosome.

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Genetic information carried by a(n) _____________________ directs the synthesis of a(n) _____________________ chain during translation.

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You will need a genetic code table to answer the following. The following statement refer to the five RNA codons listed below; match them appropriately:​ -This codon codes for an amino acid and indicates the beginning of a coding region.


A) ​AUG
B) ​UAA
C) ​UUU
D) ​UUA
E) ​AAA

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Figure 9.7 ​ The following question refer to the codon table above. Figure 9.7 ​ The following question refer to the codon table above.   -What carries amino acids to ribosomes during translation? A)  ​mRNA B)  ​tRNA C)  ​DNA D)  ​rRNA E)  ​exons -What carries amino acids to ribosomes during translation?


A) ​mRNA
B) ​tRNA
C) ​DNA
D) ​rRNA
E) ​exons

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Figure 9.3​ Figure 9.3​    -The process of going from transcription to translation A)  ​explains the structural complexity of genes. B)  ​describes the flow of genetic information. C)  ​is based upon the role of proteins in controlling life. D)  ​does not explain how genes function. E)  ​explains evolution in terms of molecular biology. -The process of going from transcription to translation


A) ​explains the structural complexity of genes.
B) ​describes the flow of genetic information.
C) ​is based upon the role of proteins in controlling life.
D) ​does not explain how genes function.
E) ​explains evolution in terms of molecular biology.

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Assume alternative splicing can generate all permutations and combination. How many proteins could a gene with three exons and two introns generate?

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​This gene could generate up t...

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Which of the following initiates the process of transcription?


A) RNA polymerase​
B) ​DNA polymerase
C) ​helicase
D) ​transfer RNA
E) ​exons

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What does the fact that all organisms use essentially the same genetic code suggest about the origin of life?

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​The common use of essentially the same ...

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The form of RNA that carries the code from DNA to the site of protein assembly is called


A) ​messenger RNA.
B) ​nuclear RNA.
C) ​ribosomal RNA.
D) ​transfer RNA.
E) ​structural RNA.

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In eukaryotes, all of the different types of RNA are transcribed in the


A) ​mitochondria.
B) ​cytoplasm.
C) ​ribosomes.
D) ​nucleus.
E) ​endoplasmic reticulum.

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A frameshift mutation results in


A) ​a normal protein due to the redundancy of the genetic code.
B) errors in DNA replication
C) errors in DNA splicing
D) ​a change in all mRNA codons downstream from the mutation
E) a change in the third position of one codon

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Gene _____________________ requires the participation of RNA, tRNA, and _____________________.

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Transcription starts at a region of DNA called a(n)


A) ​sequencer.
B) ​promoter.
C) ​activator.
D) ​terminator.
E) ​transcriber.

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  -The structure in the above figure demonstrates which of the following? A)  ​transcription and translation occur simultaneously on a single strand B)  ​ribosomes attached to a strand of DNA C)  ​a small ribosomal subunit D)  ​multiple ribosomes on a strand of mRNA E)  ​a single unattached ribosome -The structure in the above figure demonstrates which of the following?


A) ​transcription and translation occur simultaneously on a single strand
B) ​ribosomes attached to a strand of DNA
C) ​a small ribosomal subunit
D) ​multiple ribosomes on a strand of mRNA
E) ​a single unattached ribosome

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Figure 9.3​ Figure 9.3​    -The helix structure on the right of the above figure represents A)  ​DNA. B)  ​RNA. C)  ​lipid. D)  ​protein. E)  ​phospholipid. -The helix structure on the right of the above figure represents


A) ​DNA.
B) ​RNA.
C) ​lipid.
D) ​protein.
E) ​phospholipid.

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B

The relationship between strands of RNA and DNA during transcription is


A) antagonistic.​
B) ​opposite.
C) ​complementary.
D) ​an exact duplicate.
E) ​unrelated.

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C

Figure 9.7 ​ The following question refer to the codon table above. Figure 9.7 ​ The following question refer to the codon table above.   -The sequence of amino acids specified by this mRNA (AUGCGUCCA)  is A)  ​serine - histidine - lysine. B)  ​methionine - arginine - proline. C)  ​methionine - alanine - serine. D)  ​valine - arginine - leucine. E)  ​valine - proline - methionine. -The sequence of amino acids specified by this mRNA (AUGCGUCCA) is


A) ​serine - histidine - lysine.
B) ​methionine - arginine - proline.
C) ​methionine - alanine - serine.
D) ​valine - arginine - leucine.
E) ​valine - proline - methionine.

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B

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