Multiple Choice
Which two functional groups are always found in amino acids?
a) Carbonyl and amino groups.
b) Carboxyl and amino groups.
c) Amino and sulfhydryl groups.
d) Hydroxyl and carboxyl groups.
4. Biomolecules
Proteins
Back4. Biomolecules
Proteins
- Multiple Choice
What term is used for an amino acid chain that has greater than 50 covalently linked amino acids?
a) Protein.
b) Peptide.
c) Amino acid.
d) Polypeptide.
- Multiple Choice
Which of the following is true of protein structure?
a) Peptide bonds are formed by hydrolysis.
b) Peptide bonds join the amine group on one amino acid with the R group of another amino acid.
c) Secondary protein structures are caused by hydrogen bonding between atoms of the peptide backbone.
d) Tertiary protein structure emerges when there is more than one polypeptide in a protein.
- Multiple Choice
What is the role of a chaperone protein?
a) Assist in RNA and DNA folding.
b) Assist in membrane transport.
c) Assist in protein denaturation.
d) Assist in dehydration synthesis reactions.
e) Assist in protein folding or re-naturing.
- Multiple ChoiceThe overall three-dimensional shape of a single polypeptide is called its __________.
- Multiple ChoiceWhen a protein is denatured, why does it lose its functionality?
- Multiple ChoiceWhich of the following lists ranks these molecules in the correct order by size from smallest to largest?
- Multiple ChoiceWhich of the following represents a specific description of a polypeptide?
- Multiple ChoiceEnzyme molecules require a specific shape to perform their catalytic function. Which of the following might alter the shape of an enzymatic protein?
- Multiple ChoiceThe peptide bond is __________.
- Multiple ChoiceThe α helix and β pleated sheet represent which level of protein structure?
- Multiple ChoiceProtein molecules are polymers (chains) of __________.
- Multiple ChoiceWhat do Alzheimer's, Parkinson's, and mad cow disease have in common?
- Multiple ChoiceThe "primary structure" of a protein refers to __________.
- Open QuestionWhat two functional groups are bound to the central carbon of every free amino acid monomer?a. an R-group and a hydroxyl groupb. an NāH group and a ā(CāO) groupc. an amino group and a hydroxyl groupd. an amino group and a carboxyl group