TEKS B.6(C) - Protein Synthesis

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

Which of these is the correct amino acid chain produced from the DNA template strand?

• arginine- leucine - proline - asparagine - lysine - arginine

• tryptophas - phenylalanine - leucine - glycine - asparagine - phenaylalanine

• serine - leucine - proline - asparagine - lysine - arginine

• tryptophan - phenylalanine - leucine - glycine - asparagine - serine

Tags

NGSS.HS-LS1-1

A model of a biological process is shown above. What is the purpose of this process?

• To replicate the DNA of an organism before cell division

• to assemble nucleotides in an nRNA chain along a DNA template

• to synthesize amino acids used to unzip strands of DNA and copy the genetic code.

• to translate the genetic code into a specific sequence of amino acids

Tags

NGSS.HS-LS1-1

The initial steps in gene expression are modeled in the picture above. Double-stranded DNA first unwinds into two strands.

Which process are products are represented in Diagram 2?

• Process: transcription/ product: mRNA

• Process: Translation: product; protein

• Process: replication; product: tRNA

• Process: recombination; product: polymerase

Part of an important cellular process involving a DNA strand is modeled below.

What is the purpose of this cellular process?

• Preserving genetic information for future generations

• deleting the information in the sequence produced from the DNA template

• transcribing information in the DNA sequence for use by the cell

• Producing more nucleotides for the DNA sequence.