Protein -- A Macromolecule
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What elements are found in all proteins?
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C, H, O, only
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C, H, O and N
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C, H, O, P
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C, H, O, S
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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.
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- 2.
What is a name for a monomer of protein?
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Polypeptide
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Monoscaccharide
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Fatty acid
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Amino acid
Correct Answer
A. Amino acidExplanation
Amino acids are the building blocks (monomers) of proteins.
Monosaccharides are the building blocks of carbohydrates.Rate this question:
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- 3.
This is a basic pattern of an amino acid. What does portion A represent?
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Carboxylic acid portion
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Variable portion
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Amine portion
Correct Answer
A. Amine portionExplanation
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.Rate this question:
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- 4.
Which of the following is TRUE?
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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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The amino acids primary shape is a 3-D structure.
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Carbohydrates form polypeptide chains.
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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.Rate this question:
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- 5.
In the lab, how do you test for proteins
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Benedict's test
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Iodine test
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Paper bag/oily test
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Biuret Test
Correct Answer
A. Biuret TestExplanation
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.Rate this question:
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- 6.
Which of the following is NOT made up primarily of proteins?
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Cellulose
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Enzymes
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Bones and Muscles
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Transport molecules (including Hemoglobin)
Correct Answer
A. CelluloseExplanation
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.Rate this question:
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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.
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Current Version
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Mar 21, 2023Quiz Edited by
ProProfs Editorial Team -
May 03, 2019Quiz Created by
Kwchiro
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