Course

Biochemistry

Study Pack

Set 30 Protein Synthesis

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Question 1

(Multiple Choice)

Free
Which of the following statements is true regarding ribosomes?

A) they are found in the cytosol and nucleus of all cells
B) prokaryotic ribosomes consist of a 30S and a 50S subunit while eukaryotic ribosomes consist of a 60S and an 80S subunit
C) ribosomes consist of both protein and ribonucleic acid with the majority of the mass from the protein component
D) since the peptidyl transferase activity is perfomed by RNA, it can be considered a ribozyme
E) all are true

Answer

Question 2

(Multiple Choice)

Free
All are characteristics of ribosomal subunit assembly under appropriate conditions of pH and ionic strength EXCEPT:

A) ribosomes self-assemble spontaneously
B) no intervention by any additional factors or chaperones is required
C) ribosomal proteins bind in a specific order.
D) rRNA acts as a scaffold upon which various ribosomal proteins convene
E) all are true

Answer

Question 3

(Multiple Choice)

Free
Ribosomal proteins are typically rich in the amino acids ____ and ____ to interact with ____ RNAs.

A) asp; glu; polycationic
B) asp; ala; polycationic
C) lys; ala; polyanionic
D) ala; arg; polyanionic
E) arg; lys; polyanionic

Answer