Protein -- A Macromolecule

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| Attempts: 199
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  • 1/6 Questions

    What elements are found in all proteins?

    • C, H, O, only
    • C, H, O and N
    • C, H, O, P
    • C, H, O, S
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About This Quiz

Explore the fundamental components of proteins in the 'Protein -- a macromolecule' quiz. Learn about amino acids, protein structure, and the Biuret Test. This quiz is ideal for enhancing understanding of protein's chemical makeup and its biological functions.

Biochemistry Quizzes & Trivia

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  • 2. 

    What is a name for a monomer of protein?

    • Polypeptide

    • Monoscaccharide

    • Fatty acid

    • Amino acid

    Correct Answer
    A. Amino acid
    Explanation
    Amino acids are the building blocks (monomers) of proteins.
    Monosaccharides are the building blocks of carbohydrates.

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  • 3. 
    This is a basic pattern of an amino acid. What does portion A represent? - ProProfs

    This is a basic pattern of an amino acid. What does portion A represent?

    • Carboxylic acid portion

    • Variable portion

    • Amine portion

    Correct Answer
    A. Amine portion
    Explanation
    Portion A in the basic pattern of an amino acid represents the amine portion. This portion consists of an amino group (-NH2) which is attached to the central carbon atom of the amino acid. The amine portion is responsible for the basic properties of amino acids and plays a crucial role in protein synthesis and structure. It is involved in forming peptide bonds with other amino acids, contributing to the formation of proteins.

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  • 4. 

    In the lab, how do you test for proteins

    • Benedict's test

    • Iodine test

    • Paper bag/oily test

    • Biuret Test

    Correct Answer
    A. Biuret Test
    Explanation
    Benedict's tests for simple sugars - example: glucose. Iodine tests for starches. Paper bag (looking for oily stain) is for fats.
    Biuret test is for proteins. A positive test will turn the solution from blue to purple.

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  • 5. 

    Which of the following is TRUE?

    • The sequence of amino acids makes up the primary shape. The polypeptide chains fold into 3-dimensional shapes that make up various structures.

    • The amino acids primary shape is a 3-D structure.

    • Carbohydrates form polypeptide chains.

    • Proteins are flat structures. 

    Correct Answer
    A. The sequence of amino acids makes up the primary shape. The polypeptide chains fold into 3-dimensional shapes that make up various structures.
    Explanation
    The sequence of amino acids makes up the primary shape. The polypeptide chains fold into 3-dimensional shapes that make up various structures.

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  • 6. 

    Which of the following is NOT made up primarily of proteins?

    • Cellulose

    • Enzymes

    • Bones and Muscles

    • Transport molecules (including Hemoglobin)

    Correct Answer
    A. Cellulose
    Explanation
    Proteins make up most structures in a living organism. Proteins make up enzymes, collagen, bones, transport molecules, bone and muscle. Cellulose -- which helps to give the plants structure is a polysaccharide -- a chain of glucose molecules. It is NOT a protein.

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Quiz Review Timeline (Updated): Mar 21, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • May 03, 2019
    Quiz Created by
    Kwchiro
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