C889 Part 2 Review

What occurs in a reaction to break polymers apart into monomer sub-units?

• A molecule of water is added.

• A molecule of water is removed.

• A phosphate group is added.

• A phosphate group is removed.

What is the type of secondary structure in protein that exhibits a coiled structure?

• β-pleated sheet

• Double helix

• α-helix

• Supercoiling

Beta-pleated sheets are one of the two common structures found in which level of protein structure?

• Primary structure

• Secondary structure

• Tertiary structure

• Quaternary structure

Side chain interactions result in specific three-dimensional folds within a protein.

Which type of protein structure is described in the above example?

• Primary structure

• Secondary structure

• Tertiary structure

• Quaternary structure

What is the name of the object indicated by the black arrow ?

• RNA polymerase

• Large ribosomal subunit (60S)

• Small ribosomal subunit (40S)

• DNA polymerase

What molecule is shown at label number 3?

• Protein

• mRNA

• DNA

• Ribosome

What structure is represented by the pale gray shape shown at label number 10?

• Anticodon

• DNA

• Protein

• Ribosome

What is the name of the complex responsible for removing introns from mRNA?

• Exosome

• Spliceosome

• Polymerase

• Helicase

Which post transcriptional 3' structure prevents the degradation of mRNA by cytoplasmic enzymes?

• Intron

• Exon

• Poly-A tail

• Spliceosome

 Which of the following steps is responsible for modifying mRNA so that the ribosome knows where to attach and begin translation?

• Addition of a poly-A tail

• Binding of the spliceosome to introns

• Addition of a 5’ cap to a modified guanine (G)

• Transcription factors binding the promoter site