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WorksheetsProteins!
Total questions: 10
Worksheet time: 5mins
Which of the following are true of the secondary structure of proteins? Select all that apply!
One formation is the beta helix
One formation is the alpha helix
They are stabilized by hydrogen bonds
One formation is the beta-pleated sheet
They are stabilized by peptide bonds
Which of the following are a component of amino acids? Select all that apply!
Central calcium atom
Carboxyl group
Phosphate group
Amino group
Central carbon atom
What is the monomer of a protein?
Amino acid
Phospholipid
Nucleotide
Simple sugars
Describe the side-chain of this amino acid.
Non-polar and hydrophobic
Polar and uncharged
Polar and charged (basic)
Polar and charged (acidic)
Describe the side-chain of this amino acid.
Non-polar and hydrophobic
Polar and uncharged
Polar and charged (basic)
Polar and charged (acidic)
A ___________ is a covalent bond that forms between two ___________ amino acids.
Peptide ; cysteine
Hydrophobic effect ; nonpolar
Hydrophilic effect ; polar
Disulfide bridge; cysteine
Disulfide bridge ; serine
Proteins are formed via ________ reactions, in which water is a _______.
dehydration; reactant
dehydration; product
hydrolysis; reactant
hydrolysis; product
Which of the following are true of R-groups, or sidechains, on amino acids? Select all that apply.
They give amino acids their identity
They may be charged or uncharged
They may be hydrophobic or hydrophilic
They are identical across all amino acids
They form peptide bonds with other R-groups
Which interaction forms between nonpolar R-groups?
Hydrogen bonds
Peptide bonds
Disulfide bridges
Hydrophobic effects
Ionic bonds
To build a polypeptide, amino acids form __________ bonds, which are _________.
Hydrogen ; weak
Hydrogen ; strong
Peptide ; covalent
Peptide ; ionic
Ionic ; strong
