Protein Synthesis #1

What is the amino acid sequence that will be translated from the mRNA sequence?

mRNA Sequence: 5' UGC UAC AGA ACC 3'

• Threonine - Isoleucine - Serine - Tryptophan

• Cysteine - Tyrosine - Arginine - Threonine

• Serine - Methionine - Tyrosine - Tryptophan

• Proline - Arginine - Histidine - Arginine

A diagram of the steps in the production of a protein is shown. Which description identifies the purpose of Step A in this process?

• To correct mutations in the DNA sequence

• To produce an exact copy of the DNA molecule

• To copy the DNA of a gene sequence onto a strand of mRNA

• To assist in the folding of a protein.

A model of transcription and a codon chart are shown. Which amino acid would be coded first from the DNA strand being transcribed?

• Cys

• Phe

• Ile

• Met

A partial DNA segment and an mRNA codon chart are shown. 3’ T C A T G C A T G 5’ What amino acid sequence is encoded in the partial DNA segment?

• Serine – Threonine – Tyrosine

• Serine – Serine – Tyrosine

• Serine – Threonine – Methionine

• Serine – Alanine – Methionine

Students are modeling mRNA during the process of protein synthesis. Which answer choice correctly describes the model of the mRNA strand being transcribed?

• The mRNA strand is complementary to the DNA template strand; however, uracil instead of adenine is paired with thymine.

• The mRNA strand is complementary to the DNA template strand; however, uracil instead of thymine is paired with adenine.

• The mRNA strand is an exact copy of the DNA template strand; however, uracil instead of adenine is paired with thymine.

• The mRNA strand is an exact copy of the DNA template strand; however, uracil instead of thymine is paired with adenine.