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

What is a catabolic reaction?

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

What occurs in the absence of oxygen during cellular respiration?

<p>Fermentation processes may take place (B)</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 (D)</p> Signup and view all the answers

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

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

What occurs primarily during the light reactions of photosynthesis?

<p>ATP and NADPH are produced (B)</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. (B)</p> Signup and view all the answers

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

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

What are the starting reactants of photosynthesis?

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

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

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

What are the main products of translation?

<p>Proteins and polypeptides (A)</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 (D)</p> Signup and view all the answers

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