Cell Structure and Function

What is the tertiary structure of a protein?

• Sequence of amino acids
• Repeating local structures like α-helix
• Association of multiple subunits
• Three-dimensional folding of the entire polypeptide chain

What is the secondary structure of a protein stabilized by?

• Ionic bonds
• Peptide bonds
• Disulfide bonds
• Hydrogen bonds

What is the function of ribosomal RNA (rRNA)?

• Translates mRNA
• Replicates DNA
• Transports amino acids
• Forms part of ribosomes

Which nitrogenous base is unique to RNA?

• Adenine
• Cytosine
• Thymine
• Uracil

Which nitrogenous base is unique to DNA?

• Adenine
• Cytosine
• Uracil
• Thymine