TRANSCRIPTION_PROTEIN SYNTHESIS

Multiple Choice

Describe the two main stages of protein synthesis and explain their significance in the cell.

• Transcription and folding
• The two main stages of protein synthesis are transcription and translation.
• Replication and modification
• Translation and degradation

Multiple Choice

What is the main function of transcription in a cell?

• To make a copy of RNA from a DNA template

• To synthesize DNA from RNA

• To break down proteins

• To transport mRNA out of the cell

Multiple Select

Which of the following are true about RNA polymerase?

• It binds to DNA and unzips the double helix

• It matches RNA bases with their DNA complements

• It synthesizes proteins directly

• It is responsible for DNA replication

Multiple Choice

During transcription, DNA base A pairs with RNA base ___.

• U
• T

• C

• G

Multiple Choice

What happens during the elongation step of transcription?

• RNA polymerase adds complementary RNA bases to build mRNA

• RNA polymerase binds to the promoter region

• RNA polymerase releases the mRNA strand

• The DNA double helix reforms

Multiple Choice

Explain the three main steps of transcription and the role of RNA polymerase in each step.

• Termination is the first step of transcription.
• The three main steps of transcription are initiation, elongation, and termination, with RNA polymerase playing a crucial role in each step.
• Transcription occurs in the cytoplasm only.
• RNA polymerase only functions during initiation.

Multiple Choice

If the DNA template is TAC, the mRNA codon will be ___.

• AUG
• ATG

• UAG

• UGA

Multiple Choice

Explain the relationship between transcription and translation as shown in the diagram. How does mRNA connect these two processes?

• mRNA acts as a bridge between transcription and translation by carrying the genetic code from DNA to ribosomes for protein synthesis.
• mRNA directly synthesizes proteins without the need for translation.
• Transcription occurs in the ribosomes while translation happens in the nucleus.
• mRNA is produced during translation and is not involved in transcription.

Multiple Choice

What is the main purpose of transcription?

• To copy DNA into a new DNA strand

• To produce RNA from a DNA template

• To assemble amino acids into a protein

• To repair mistakes in the DNA sequence

Multiple Choice

Where in the cell does transcription occur?

• Ribosome

• Nucleus

• Cytoplasm

• Endoplasmic reticulum

Multiple Choice

Which enzyme is responsible for building the RNA strand during transcription?

• DNA Polymerase

• RNA Polymerase

• Ligase

• Helicase

Multiple Choice

If the DNA sequence is TAC – GGA – TTT, what is the correct mRNA sequence?

• AUG – CCT – AAA

• ATG – GGA – TTT

• UAC – GGA – UUU

• AUG – CCU – UUU

Multiple Choice

What are the two main stages of protein synthesis?

• Transcription and Translation

• Replication and Transcription

• Translation and Replication

• Replication and Duplication