Transcription & Translation

Fill in the Blanks

Fill in the blank: RNA polymerase starts from the 3’ end adding RNA nucleotides complementary to the DNA strand. For example, ATG on the DNA strand would be

on the new RNA strand.

Multiple Choice

What does the codon CAC represent?

• Cysteine

• Histidine

• Leucine

• Tryptophan

Multiple Choice

What is the relationship between the codon and the anticodon in the given diagram?

• The codon is complementary to the anticodon

• The codon is identical to the anticodon

• The codon is the reverse of the anticodon

• The codon and anticodon are unrelated

Multiple Choice

What is the role of tRNA in the process of translation?

• To carry amino acids to the ribosome

• To transcribe DNA into mRNA

• To bind to ribosomes only

• To initiate the process of transcription

Multiple Choice

What is the role of the stop codon in the translation process?

• It initiates translation

• It releases the polypeptide

• It binds to tRNA

• It synthesizes mRNA

Fill in the Blanks

Using the chart with its abbreviated amino acid names, TRANSLATE the following sequence of mRNA: AUG GCU UAA

Multiple Choice

Muscle cells differ from nerve cells mainly because they

• express different genes.

• contain different genes.

• use different genetic codes.

• have unique ribosomes

Multiple Choice

When gene expression occurs

• A gene is mutated with either an insertion or deletion

• The gene is removed from the genotype in that cell

• The gene is passed on to the daughter cells during mitosis

• The gene is activated and used in protein synthesis

Multiple Choice

How can a person's liver cells have the same exact DNA sequences as their nerve cells even though the look and perform completely different?

• The two different cells become mutated
• The proteins expressed in each cell are different
• They actually have different DNA in the two types of cells.
• The genome of the different cells changes