29 Questions
What is the percentage of nitrogen content in proteins?
16%
What type of bond is formed between the carboxyl group of one amino acid and the amino group of another amino acid?
Peptide bond
Which level of protein structure involves the formation of alpha helixes and beta sheets?
Secondary structure
What is the term for the end of a protein structure with a free carboxyl group?
C-terminal
What is the classification of proteins that are composed only of amino acids?
Simple proteins
What is the term for the interactions between the R groups of amino acids that form a three-dimensional structure?
Tertiary structure formation
What is the characteristic of globular proteins?
Symmetrical, compactly folded polypeptide chains
Which type of protein is composed of a protein and a nonprotein component?
Conjugated protein
What is one of the functions of proteins in energy production?
Breaking down into amino acids for the citric acid cycle
What is the characteristic of mucoproteins?
Protein with >40% carbohydrates attached
What is one of the functions of proteins as a transporter?
Binding to hormones, free hemoglobin, lipids, and other molecules
What is the function of the ionizable R groups of amino acids in proteins?
Buffering capacity
What type of bond links amino acids together in a protein?
Peptide bond
Which level of protein structure involves the sequence of amino acids?
Primary structure
What is the characteristic of proteins that distinguishes them from carbohydrates and lipids?
High nitrogen content
What type of protein is composed only of amino acids?
Simple protein
What is the term for the end of a protein structure with a free amino group?
N-terminal
At which level of protein structure do hydrogen bonds form between CO and NH groups?
Secondary structure
What type of interactions occur between the R groups of amino acids in tertiary structure?
Van der Waals forces and hydrophobic interactions
What is the level of protein structure that involves the interactions of multiple polypeptide chains?
Quaternary structure
What is a characteristic of globular proteins?
Symmetrical and compactly folded polypeptide chains
Which type of protein is composed of a protein and a nonprotein component?
Conjugated protein
What is a function of proteins in energy production?
Breaking down into amino acids to produce energy
What is the function of proteins as transporters?
Binding to molecules for transportation
What is the characteristic of fibrous proteins?
Elongated and asymmetrical polypeptide chains
What is the term for proteins with a lipid prosthetic group?
Lipoprotein
What is a function of proteins in maintaining water distribution?
Maintaining the colloidal osmotic pressure
Which type of protein has a carbohydrate content of 10-40%?
Glycoprotein
What is a function of proteins as a buffer?
Buffering capacity by binding or releasing H+ ions
Test your knowledge of proteins and non-protein compounds, including their characteristics, structure, and bonding. Learn about the N-terminal and C-terminal ends of protein structures and more.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
