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Principles of Biology

Robert Brooker, Eric Widmaier, Linda Graham, Peter Stiling

Chapter 11

The Expression of Genetic Information via Genes II: Non-coding RNAs - all with Video Answers

Educators

Chapter Questions

01:25

Problem 1

Which of the following types of molecules could bind to an ncRNA due to base pairing?
a. DNA
b. RNA
c. protein
d. small molecule
e. both $a$ and $b$

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:19

Problem 2

Which of the following is not a general function of an ncRNA?
a. encoding a polypeptide
b. acting as a ribozyme
c. acting as a guide
d. acting as a scaffold
e. acting as a decoy

Christina Sorrentino
Christina Sorrentino
Numerade Educator
02:04

Problem 3

TERC, which is the RNA component of telomerase, plays two key roles in the synthesis of telomere repeat sequences. During this process,
a. TERC first acts a template, then acts as a guide.
b. TERC first acts a guide, then acts as a template.
c. TERC first acts a template, then acts as a decoy.
d. TERC first acts a guide, then acts as a decoy.
e. TERC first acts as a decoy, then acts as a template.

Bryan Valdivia
Bryan Valdivia
Numerade Educator
01:14

Problem 4

HOTAIR causes certain genes to be repressed by facilitating
a. the binding of a repressor protein.
b. the release of an activator protein.
c. the covalent modification of histones.
d. the removal of nucleosomes.
e. both a and c.

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:31

Problem 5

One of the roles of the RNA component of signal recognition particle (SRP) is to stimulate certain proteins to hydrolyze GTP. If this function of SRP RNA did not work properly, what would you expect to happen?
a. SRP would not bind to the ER signal sequence of a polypeptide.
b. SRP would not cause translation to pause.
c. SRP would not bind to an SRP receptor in the ER membrane.
d. SRP would not be released from the ER membrane.
e. Both a and b are correct.

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:20

Problem 6

During RNA interference, what binds to an mRNA to inhibit translation?
a. a pri-miRNA
b. a pre-miRNA or pre-siRNA
c. a double-stranded miRNA or double-stranded siRNA
d. a single-stranded miRNA or single-stranded siRNA
e. dicer

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:15

Problem 7

If the antisense sequences in a snoRNA were mutated in a way that prevented rRNA binding, this would prevent the snoRNA from acting as a
a. guide.
b. scaffold.
c. decoy.
d. ribozyme.
e. blocker.

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:19

Problem 8

Cas 1 and Cas 2 proteins play a role during which of the following phases of genome defense?
a. adaptation
b. expression
c. interference
d. both adaptation and expression
e. both expression and interference

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:14

Problem 9

Which of the following components bind to tracrRNA?
a. crRNA and Casl protein
b. crRNA and Cas2 protein
c. crRNA and Cas9 protein
d. crRNA only
e. Casl and Cas2 proteins

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:11

Problem 10

Abnormalities in the expression of ncRNAs are associated with
a. many forms of cancer.
b. neurological disorders.
c. cardiovascular diseases.
d. all of the above.
e. only a and b.

Christina Sorrentino
Christina Sorrentino
Numerade Educator