Protein Folding - Multiple Choice Quiz

Which of the following best describes the process of protein synthesis?

• Conversion of RNA to DNA

• Construction of proteins from amino acids through transcription and translation

• Breaking down proteins into amino acids

• Replication of DNA into RNA

In transcription, what is the primary enzyme responsible for synthesizing mRNA?

• DNA ligase

• RNA polymerase

• Reverse transcriptase

• DNA helicase

Where does translation occur in the cell?

• Nucleus

• Ribosome in the cytoplasm

• Endoplasmic reticulum only

• Golgi apparatus

The amino group in an amino acid is attached to which carbon?

• Beta carbon

• Alpha carbon

• Gamma carbon

• Terminal carbon

Which of the following is a non-canonical amino acid?

• Alanine

• Selenocysteine

• Glycine

• Serine

Selenocysteine differs from cysteine by containing:

• Nitrogen

• Selenium

• Sulfur

• Phosphorus

Pyrrolysine is encoded by which codon?

• AUG

• UAA

• UAG

• UGA

Amino acids are linked together by:

• Ionic bonds

• Peptide bonds

• Hydrogen bonds

• Disulfide bonds

Which level of protein structure describes the sequence of amino acids?

• Primary

• Secondary

• Tertiary

• Quaternary

Alpha helices and beta sheets are stabilized mainly by:

• Hydrophobic interactions

• Hydrogen bonds

• Disulfide bonds

• Ionic bonds