bacterial_translation

Question 1 of 7

Animation Assessment

Question

Translation is the process of:

making protein from a DNA template.

assembling nucleotides into DNA.

making mRNA from a DNA template.

assembling amino acids into nucleotides.

assembling amino acids into proteins.

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Question

During bacterial translation initiation occurs in three steps; which one is last?

The large and small ribosomal subunits bind to each other.

The ribosome finds the start codon on a piece of mRNA.

The small ribosomal subunit binds to the mRNA.

The initiator tRNA binds to the start codon.

The large ribosomal subunit binds to the mRNA.

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Question

Which of the following correctly reflects the order in which events occur during elongation of translation?

the tRNA enters the P-site of the ribosome → a tRNA with an amino acid enters the A-site of the ribosome → the ribosome moves down the mRNA → a peptide bond forms between the amino acids

a tRNA with an amino acid enters the A-site of the ribosome → a peptide bond forms between the amino acids → the ribosome moves down the mRNA

a peptide bond forms between amino acids → the tRNA enters the P-site in the ribosome → the ribosome moves down the mRNA → a tRNA with an amino acid enters the A-site of the ribosome

the ribosome moves down the mRNA → a peptide bond forms between amino acids → a tRNA with an amino acids enters the A-site of the ribosome → the tRNA enters the p-site of the ribosome

the ribosome moves down the mRNA → a peptide bond forms between the amino acids → a tRNA with an amino acid enters the A-site of the ribosome

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Question

Which of the following statements about bacterial translation is true?

Amino acids are added to a growing mRNA molecule.

Amino acids are added to the 3’-hydroxyl of the growing polypeptide chain.

Amino acids are added to the amino group at the end of a growing polypeptide chain.

Amino acids are added to the growing polypeptide chain by a phosphodiester linkage.

None of the above are true of bacterial transformation.

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Question

The part of the tRNA molecule that hydrogen bonds to the codon on an mRNA in a ribosome is called the:

codon binding site.

attachment site.

anticodon.

monocodon.

decoder.

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Question

Which of the following statements about termination of bacterial transformation is false?

It requires a release factor.

It occurs when a stop codon enters the A site of a ribosome.

It results in the ribosome dissociating from the mRNA.

It requires a termination sequence.

All of the above are true.

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Question

Mutations in a sequence of DNA can result in which of the following changes to a polypeptide chain?

one amino acid being replaced by a different amino acid

a polypeptide chain being shorter than it is supposed to be

a polypeptide chain being longer than it is supposed to be

many amino acids being replaced by different amino acids

All of the above can result from mutation.

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Chapter 15. Animation Activity: Bacterial Translation

Animation Assessment

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