Biology Chapter: Protein Structure & Photosynthesis
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Questions and Answers

What are the four levels of protein structure?

  • Hydrogen bonding, ionic bonding, covalent bonding, van der Waals forces
  • Alpha, beta, gamma, delta
  • Linear, branched, cyclic, complex
  • Primary, secondary, tertiary, quaternary (correct)
  • What role does a ribosome play during translation?

  • It assembles amino acids into proteins (correct)
  • It transports tRNA to the nucleus
  • It synthesizes DNA from RNA
  • It produces ATP for energy
  • Which statement about tRNA is correct?

  • It carries amino acids to ribosomes (correct)
  • It is a type of enzyme that catalyzes reactions
  • It synthesizes mRNA from DNA
  • It acts as a receptor for signaling molecules
  • What is produced during translation?

    <p>Amino acids linked to form proteins</p> Signup and view all the answers

    What is a catabolic reaction?

    <p>A reaction that releases energy by breaking down larger molecules</p> Signup and view all the answers

    What is the primary function of chlorophyll during the light reactions of photosynthesis?

    <p>To absorb and convert light energy into chemical energy</p> Signup and view all the answers

    What is a key difference between substrate level phosphorylation and oxidative phosphorylation?

    <p>Substrate level produces ATP directly, oxidative requires an electron transport chain</p> Signup and view all the answers

    What occurs in the absence of oxygen during cellular respiration?

    <p>Fermentation processes may take place</p> Signup and view all the answers

    What is the function of an amino acyl tRNA synthetase?

    <p>To attach amino acids to their corresponding tRNA</p> Signup and view all the answers

    During transcription, which of the following products is formed from DNA?

    <p>mRNA</p> Signup and view all the answers

    Which of the following best describes a codon?

    <p>A sequence of three RNA nucleotides that codes for an amino acid</p> Signup and view all the answers

    What occurs primarily during the light reactions of photosynthesis?

    <p>ATP and NADPH are produced</p> Signup and view all the answers

    Which statement correctly differentiates between exergonic and endergonic reactions?

    <p>Exergonic reactions release energy, while endergonic reactions require energy input.</p> Signup and view all the answers

    Which component is essential for the electron transport chain to function properly?

    <p>Oxygen</p> Signup and view all the answers

    What are the starting reactants of photosynthesis?

    <p>Carbon dioxide and water</p> Signup and view all the answers

    Which of the following describes a step in cellular respiration that occurs without oxygen?

    <p>Glycolysis</p> Signup and view all the answers

    What are the main products of translation?

    <p>Proteins and polypeptides</p> Signup and view all the answers

    What is the primary role of the ribosome during translation?

    <p>To decode mRNA into a polypeptide chain</p> Signup and view all the answers

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