Multiple Choice
Which type of organic molecules make up the enzyme trypsin and the proteins it hydrolyzes?
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1. Introduction to Biochemistry
Proteins
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Based on the results, which of the following best describes what a protein is?
A
A lipid molecule that forms biological membranes
B
A polymer composed of amino acid residues linked by peptide bonds
C
A type of nucleic acid responsible for storing genetic information
D
A carbohydrate used primarily for energy storage
Verified step by step guidance1
Step 1: Begin by understanding the definition of a protein. Proteins are macromolecules composed of amino acids linked together by peptide bonds, forming a polymer structure.
Step 2: Recall the structure of amino acids. Each amino acid contains an amino group (-NH₂), a carboxyl group (-COOH), a hydrogen atom, and a unique side chain (R group) attached to a central carbon atom.
Step 3: Understand the process of peptide bond formation. Peptide bonds are formed through a condensation reaction between the amino group of one amino acid and the carboxyl group of another, releasing a molecule of water (H₂O).
Step 4: Compare the given options to the definition of a protein. Eliminate incorrect choices by identifying their respective macromolecule types: lipids, nucleic acids, and carbohydrates, which are distinct from proteins.
Step 5: Select the correct answer, which aligns with the definition of a protein: 'A polymer composed of amino acid residues linked by peptide bonds.'
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