Proteínas: Estructura y Función Flashcards
(26 cards)
What is the basic building block of proteins?
Amino acids.
True or False: Peptide bonds are formed between amino acids.
True.
What type of bond links amino acids together?
Peptide bond.
Fill in the blank: The sequence of amino acids in a protein determines its _____ and _____ .
structure, function.
What are the four levels of protein structure?
Primary, secondary, tertiary, and quaternary.
Which level of protein structure is characterized by alpha helices and beta sheets?
Secondary structure.
What type of interaction is primarily responsible for the tertiary structure of proteins?
Interactions between R groups (side chains) of amino acids.
True or False: The primary structure of a protein is its unique sequence of amino acids.
True.
What is the quaternary structure of a protein?
The arrangement of multiple polypeptide chains into a single functional unit.
Which amino acid is known for forming disulfide bonds?
Cysteine.
Fill in the blank: The backbone of a protein is made up of alternating _____ and _____ groups.
amino, carboxyl.
What is the role of hydrogen bonds in protein structure?
They stabilize secondary and tertiary structures.
What determines the specificity of a protein’s function?
Its three-dimensional structure.
True or False: All proteins have a quaternary structure.
False.
Which level of protein structure involves the folding of a single polypeptide chain?
Tertiary structure.
What are the two main types of secondary structures in proteins?
Alpha helices and beta sheets.
What does the term ‘denaturation’ refer to in proteins?
The process of losing the native structure and function of a protein.
Fill in the blank: The _____ structure is the highest level of organization in proteins that consists of multiple polypeptide chains.
quaternary.
What type of amino acid side chain is hydrophobic?
Non-polar.
What is the significance of the R group in amino acids?
It determines the properties and functions of the amino acid.
True or False: Peptide bonds are covalent bonds.
True.
What is the process called by which proteins are synthesized from amino acids?
Translation.
Fill in the blank: The _____ structure of a protein is maintained by various interactions including ionic bonds, hydrogen bonds, and hydrophobic interactions.
tertiary.
What type of protein structure is typically stabilized by van der Waals forces?
Tertiary structure.
