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Chapter 15: Q. 16 (page 392)

The RNA components of ribosomes are synthesized in the ________. a. cytoplasm b. nucleus c. nucleolus d. endoplasmic reticulum

Short Answer

Expert verified

Option c is correct.

Step by step solution

01

Step 1. Introduction

The process through which information encoded in mRNA is translated into amino acid during protein synthesis is known as translation.

02

Step 2. Explanation of the correct option

Option c is correct because ribosomal RNA is synthesized from transfer RNA in a specialized region of the cell called the nucleolus.

03

Step 3. Explanation of the incorrect option

Option a is incorrect because RNA is synthesized in nucleolus instead of cytoplasm.

Option b is incorrect because RNA is synthesized in the nucleolus instead of the nucleus.

Option d is incorrect because RNA is synthesized in the nucleolus instead of the endoplasmic reticulum.

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Most popular questions from this chapter

The AUC and AUA codons in mRNA both specify isoleucine. What feature of the genetic code explains this?

a. complementarity

b. nonsense codons

c. universality

d. degeneracy

What processing step enhances the stability of pretRNAs and pre-rRNAs?

a. methylation

b. nucleotide modification

c. cleavage

d. splicing

What transcripts will be most affected by low levels of 伪amanitin?

a. 18S and 28S rRNAs

b. pre-mRNAs

c. 5S rRNAs and tRNAs

d. other small nuclear RNAs

A scientist introduces a mutation that makes the 60S ribosomal subunit nonfunctional in a human cell line. What would be the predicted effect on translation? a. Translation stalls after the initiation AUG codon is identified. b. The ribosome cannot catalyze the formation of peptide bonds between the tRNAs in the A and P sites. c. The ribosome cannot interact with mRNAs. d. tRNAs cannot exit the E site of the ribosome

Figure 15.16 Many antibiotics inhibit bacterial protein synthesis. For example, tetracycline blocks the A site on the bacterial ribosome, and chloramphenicol blocks peptidyl transfer. What specific effect would you expect each of these antibiotics to have on protein synthesis?

Tetracycline would directly affect:

a. tRNA binding to the ribosome

b. ribosome assembly

c. growth of the protein chain

Chloramphenicol would directly affect

a. tRNA binding to the ribosome

b. ribosome assembly

c. growth of the protein chain
See all solutions

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