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Exam 9: From Dna to Protein

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Question 31

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Of all the different codons that exist, three of them

A) are involved in mutations.
B) do not specify a particular amino acid.
C) cannot be copied.
D) provide instructions such as STOP.
E) do not specify a particular amino acid and provide instructions such as STOP.

F) A) and C)
G) B) and E)

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Question 32

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Classification.You will need a genetic code table to answer the following.The following statements refer to the five RNA codons listed below; match them appropriately. a.AUG b.UAA c.UUU d.UUA e.AAA -This codon terminates a coding region.

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Question 33

Multiple Choice

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Before messenger RNA is mature,

Gene expression requires the participation of the following three types of RNA: __________, __________and __________.

There are how many different kinds of amino acids in proteins?

Classification.You will need a genetic code table to answer the following.The following statements refer to the five RNA codons listed below; match them appropriately. a.AUG b.UAA c.UUU d.UUA e.AAA -A single mutation involving the second letter of codon AUA could convert it to this codon.

Mutations may arise by replication error, __________ activity, or exposure to environmental hazards.

In correct order, the three stages of translation are

Which event occurs during the elongation stage?

The following questions refer to the genetic code table above. -The first amino acid of a new polypeptide chain is

Classification.You will need a genetic code table to answer the following.The following statements refer to the five RNA codons listed below; match them appropriately. a.AUG b.UAA c.UUU d.UUA e.AAA -This codon codes for an amino acid and indicates the beginning of a coding region.

The genetic code is made up of units consisting of how many nucleotides?

A polysome is

MATCHING Choose the best matching element. a.deciphered the mRNA code words b.RNA-directed synthesis of polypeptide chains c.sites at which RNA polymerases can bind and initiate transcription d.binds to small subunit platform of a ribosome e.guided and catalyzed by RNA polymerases f.polypeptide chain elongation proceeds independently at each body in this cluster g.discovered transposons h.a tRNA triplet opposite a codon i.a set of three nucleotides -translation

MATCHING Choose the best matching element. a.deciphered the mRNA code words b.RNA-directed synthesis of polypeptide chains c.sites at which RNA polymerases can bind and initiate transcription d.binds to small subunit platform of a ribosome e.guided and catalyzed by RNA polymerases f.polypeptide chain elongation proceeds independently at each body in this cluster g.discovered transposons h.a tRNA triplet opposite a codon i.a set of three nucleotides -polysome

Uracil will pair with

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

Which of the following dominates in the process of transcription?

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

MATCHING Choose the best matching element. a.deciphered the mRNA code words b.RNA-directed synthesis of polypeptide chains c.sites at which RNA polymerases can bind and initiate transcription d.binds to small subunit platform of a ribosome e.guided and catalyzed by RNA polymerases f.polypeptide chain elongation proceeds independently at each body in this cluster g.discovered transposons h.a tRNA triplet opposite a codon i.a set of three nucleotides -transcription