Biochemistry Basics Quiz

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Questions and Answers

What is the discipline that uses the principles and language of chemistry to explain biology?

  • Bioengineering
  • Biophysics
  • Biological chemistry (correct)
  • Bioinformatics

Which of the following is NOT a principal type of biomolecule?

  • Carbohydrates
  • Proteins
  • Nucleic acids
  • Enzymes (correct)

What is the function of biological membranes?

  • Energy production
  • Cell division control
  • Regulation of nutrient transport (correct)
  • Hormone secretion

Which organelle is responsible for the synthesis of proteins?

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

What is the primary function of amino acids and proteins in living organisms?

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

How are amino acids commonly classified based on the relative polarities of the R-groups?

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

What is the primary role of proteins in living systems?

<p>Acting as catalysts for biochemical reactions (B)</p> Signup and view all the answers

How are amino acids joined together in proteins?

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

What percentage of the dry weight of an organism is typically composed of proteins?

<p>50% (D)</p> Signup and view all the answers

Which of the following is NOT a function of proteins?

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

What are the monomer units that constitute proteins?

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

What distinguishes one amino acid from another?

<p>The structure of its side chain (R group) (B)</p> Signup and view all the answers

Which type of amino acid can be synthesized in the body?

<p>Essential amino acids (D)</p> Signup and view all the answers

Based on their interaction with water, how are amino acids classified?

<p>Based on their polarity (A)</p> Signup and view all the answers

What is the primary role of L-α-amino acids in living systems?

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

What is the distinctive feature of an α-carbon in an amino acid?

<p>It is attached to four different groups or atoms (A)</p> Signup and view all the answers

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