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CHAPTER 13: A sequence of three RNA bases can function as a(n) what?
(A) codon only.
(B) anticodon only.
(C) gene only.
(D) codon or anticodon.
(E) NONE of the above answers - 🧠 ANSWER ✔✔D
CHAPTER 13: What is Messenger RNA (mRNA)?
(A) a nucleic acid that, by itself, codes for the primary structure of a protein.
,(B) made directly from DNA during transcription.
(C) permanently incorporated into the structure of ribosomes.
(D) larger if the protein to be made has a longer amino acid sequence.
(E) NONE of the above answers - 🧠 ANSWER ✔✔B
CHAPTER 13: The genetic material of some viruses, such as HIV, is not
normal DNA but is instead what component?
(A) RNA.
(B) protein.
(C) carbohydrate.
(D) lipid.
(E) single-stranded DNA. - 🧠 ANSWER ✔✔A
CHAPTER 13: In a wild-type strain of fruit flies, the length of a gene from
the start to the stop codon is
2,000 DNA bases. Suppose an experiment indicated that the mRNA
molecule transcribed from this gene is much shorter (only 1,200 bases).
What is the most likely explanation for this?
(A) A mutation caused the formation of an extra stop codon in the gene.
, (B) The mRNA was prematurely degraded.
(C) There are introns in the DNA that were cut out of the mRNA.
(D) The first 800 bases of DNA are always lost as it is transcribed into
mRNA.
(E) NONE of the above answers - 🧠 ANSWER ✔✔C
CHAPTER 13: What does the process of Transcription do?
(A) synthesizing a DNA molecule from an RNA template.
(B) assembling an RNA molecule without a template.
(C) synthesizing an RNA molecule using a DNA template.
(D) synthesizing a protein using information from mRNA.
(E) replicating a single-stranded DNA molecule. - 🧠 ANSWER ✔✔C
CHAPTER 13: What is the process of converting the"message" of mRNA
into a sequence of amino acids called?
(A) translation.
(B) transcription.
(C) activation.
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