18 Questions
What is the tertiary structure of a protein?
The 3D shape of the protein formed from twisting and folding
Which bond is NOT involved in forming the tertiary structure of proteins?
Peptide bonds
What type of proteins are enzymes typically classified as?
Globular proteins
What test can be used to detect the presence of peptide bonds in a protein?
Biuret Test
What determines the function of a protein in the end?
Primary structure
What type of bonds form between the carboxyl and amino groups in proteins?
Ionic bonds
What type of bonds are formed between amino acids in proteins?
Covalent bonds
Which part of an amino acid is involved in forming peptide bonds?
All of the above
What determines the primary structure of a protein?
Order and number of amino acids
Which molecule is the monomer for protein synthesis?
Amino acid
What is the function of glycolipids with carbohydrates on the cell surface membrane?
Enhance cell recognition
What color change indicates the presence of lipids in an emulsion test?
Cloudy-white color
How can you determine the presence of a peptide bond and protein in a solution?
Look for a purple colouration after adding very dilute copper (II) sulfate solution.
What is the function of enzymes in a reaction?
Increase the rate of reaction by lowering activation energy
What is the primary factor that affects the rate of enzyme-controlled reactions with regards to temperature?
The temperature, up to an optimum point, then it decreases
What is the role of the active site in an enzyme?
It is an area formed by only a few amino acids and fits around the substrate
What does the induced fit model describe in enzyme-substrate interactions?
The enzyme changes shape to better fit around the substrate
What happens to enzyme activity at temperatures above the optimum?
Activity decreases due to increased kinetic energy
Test your knowledge on the primary, secondary, and tertiary structures of proteins with this quiz. Learn about the initial sequence of amino acids, shapes like alpha helix or beta pleated sheet, and the 3D shape of proteins.
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