CH 1: Protein Synthesis

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Where does transcription occur in the cell?

  • Ribosome
  • Mitochondria
  • Nucleus (correct)
  • Cytoplasm

What is the role of RNA nucleotides in transcription?

  • Pair with proteins in the cytoplasm
  • Convert DNA into RNA
  • Form a single-stranded mRNA molecule (correct)
  • Pair with ribosomes in translation

What happens to the mRNA after transcription?

  • It gets destroyed in the cytoplasm
  • It remains in the nucleoplasm
  • It exits the nucleus through a nuclear pore (correct)
  • It forms a double helix with DNA

During transcription, what acts as a template for mRNA synthesis?

<p>One of the unzipped DNA strands (D)</p> Signup and view all the answers

Where does translation occur?

<p>Cytoplasm (A)</p> Signup and view all the answers

What is the role of tRNA in protein synthesis?

<p>Carries specific amino acids and has an anticodon (D)</p> Signup and view all the answers

What is the function of an anticodon in tRNA molecules?

<p>It is complementary to a codon on the mRNA (D)</p> Signup and view all the answers

What happens during the elongation stage of protein synthesis?

<p>Peptide bonds form between amino acids (D)</p> Signup and view all the answers

How does termination occur in protein synthesis?

<p>Protein is released at a stop codon (A)</p> Signup and view all the answers

What ensures accurate translation of genetic information into functional proteins?

<p>Coordinated series of events involving DNA and RNA (A)</p> Signup and view all the answers

What is the role of tRNA molecules in protein synthesis?

<p>Carrying specific amino acids and binding to the mRNA at the ribosome (D)</p> Signup and view all the answers

Which part of a tRNA molecule binds to a codon on the mRNA during protein synthesis?

<p>Anticodon (C)</p> Signup and view all the answers

What happens when a tRNA's anticodon matches a codon on the mRNA?

<p>Amino acids are added in the proper sequence (B)</p> Signup and view all the answers

During which stage of protein synthesis do more tRNAs bring appropriate amino acids to be linked together by peptide bonds?

<p>Elongation (A)</p> Signup and view all the answers

What signals the end of protein synthesis during translation?

<p>Stop codon (D)</p> Signup and view all the answers

What is the function of an anticodon in tRNA molecules?

<p>Matching with a codon on mRNA (B)</p> Signup and view all the answers

What is the main function of transcription in protein synthesis?

<p>Transferring DNA information to mRNA (B)</p> Signup and view all the answers

Which of the following correctly describes the role of mRNA in protein synthesis?

<p>Decoding genetic information to synthesize proteins (A)</p> Signup and view all the answers

What is the significance of RNA nucleotides pairing with complementary bases during transcription?

<p>Creating mRNA molecules (D)</p> Signup and view all the answers

During translation, what is the function of a ribosome?

<p>Synthesizing proteins (B)</p> Signup and view all the answers

How does mRNA exit the nucleus during protein synthesis?

<p>Via a nuclear pore (C)</p> Signup and view all the answers

Which molecule serves as a template for mRNA synthesis during transcription?

<p>DNA (D)</p> Signup and view all the answers

What is the primary role of transcription in the cell?

<p>Regulating gene expression (A)</p> Signup and view all the answers

What is the role of a ribosome during protein synthesis?

<p>Decoding mRNA to synthesize a protein (B)</p> Signup and view all the answers

What type of bonds break during DNA unwinding in transcription?

<p>Hydrogen bonds (A)</p> Signup and view all the answers

Which molecule serves as a template for mRNA synthesis in transcription?

<p>DNA (D)</p> Signup and view all the answers

What is the main function of mRNA during protein synthesis?

<p>Provides genetic information for protein synthesis (C)</p> Signup and view all the answers

What is the significance of RNA nucleotides pairing with complementary bases during transcription?

<p>To ensure accurate mRNA formation (D)</p> Signup and view all the answers

During translation, what happens to the newly formed mRNA strand?

<p>It exits the nucleus through a nuclear pore (C)</p> Signup and view all the answers

What is the primary role of transcription in protein synthesis?

<p>Transferring genetic information to mRNA (B)</p> Signup and view all the answers

What is the main function of an anticodon in tRNA molecules?

<p>Identifying the mRNA sequence for protein synthesis (A)</p> Signup and view all the answers

How does the ribosome ensure the proper sequence of amino acids in a protein during translation?

<p>By preventing tRNAs from binding to incorrect codons (C)</p> Signup and view all the answers

What occurs when the ribosome reaches a stop codon during protein synthesis?

<p>The mRNA is released from the ribosome (C)</p> Signup and view all the answers

During protein synthesis, how are amino acids added to the growing polypeptide chain?

<p>By peptide bond formation catalyzed by the ribosome (A)</p> Signup and view all the answers

What is the significance of tRNAs bringing appropriate amino acids during translation?

<p>Ensuring translation accuracy (C)</p> Signup and view all the answers

Which molecule plays a crucial role in linking amino acids together during protein synthesis?

<p>rRNA (D)</p> Signup and view all the answers

What happens at the termination stage of protein synthesis?

<p>'Stop' codon halts translation (D)</p> Signup and view all the answers

In protein synthesis, what does a tRNA's anticodon specifically ensure?

<p>Correct amino acid addition (C)</p> Signup and view all the answers

What is the main function of transcription in protein synthesis?

<p>Transferring information from DNA to mRNA (C)</p> Signup and view all the answers

During transcription, which of the following correctly describes the role of the template strand?

<p>It serves as a template for mRNA synthesis (A)</p> Signup and view all the answers

What happens to RNA nucleotides during transcription?

<p>They pair with their complementary bases on DNA template (C)</p> Signup and view all the answers

In protein synthesis, what is the role of tRNA molecules?

<p>Carrying amino acids to the ribosome (D)</p> Signup and view all the answers

What is the primary function of mRNA during protein synthesis?

<p>Carrying genetic information from DNA to ribosome (B)</p> Signup and view all the answers

During translation, what is the function of a ribosome?

<p>Acting as a site for protein synthesis (A)</p> Signup and view all the answers

What is the role of tRNA molecules in protein synthesis?

<p>Carrying specific amino acids and matching anticodons to mRNA codons (B)</p> Signup and view all the answers

During protein synthesis, what happens when the ribosome reaches a stop codon on the mRNA?

<p>The ribosome disassembles into subunits (B)</p> Signup and view all the answers

What occurs during the initiation stage of protein synthesis?

<p>A codon on tRNA matches an anticodon on mRNA (A)</p> Signup and view all the answers

What is the function of an anticodon in tRNA molecules during protein synthesis?

<p>Matching with mRNA codons to ensure correct amino acid placement (D)</p> Signup and view all the answers

What is the significance of peptide bonds during elongation in protein synthesis?

<p>Linking amino acids together to form a polypeptide chain (D)</p> Signup and view all the answers

During termination in protein synthesis, what does the ribosome encounter on the mRNA?

<p>Stop codon (A)</p> Signup and view all the answers

What is the primary role of DNA and RNA in protein synthesis?

<p>Ensuring accurate translation of genetic information into functional proteins (A)</p> Signup and view all the answers

How do tRNAs contribute to protein synthesis?

<p>By carrying specific amino acids and linking them together during translation (D)</p> Signup and view all the answers

More Like This

Biology Protein Synthesis Overview
13 questions
Biology Chapter 12: Protein Synthesis
45 questions
Use Quizgecko on...
Browser
Browser