Chapter 15: Genes And How They Work

51 Questions  I  By Aggiegal8
Chapter 15: Genes and How They Work

  
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1.  The connection that exists between genes and hereditary traits requires the deciphering of the information encoded in genes into
A.
B.
C.
D.
E.
2.  Both DNA and RNA are made up of building blocks known as
A.
B.
C.
D.
3.  The "one gene-one enzyme" hypothesis was proposed by
A.
B.
C.
D.
E.
4.  DNA and RNA nucleotides are composed of five carbon sugars, phosphate, and nitrogen bases. How many total nitrogen bases are there for use in the two nucleic acids?
A.
B.
C.
D.
5.  The polypeptide-making organelles residing in the cytoplasm are large protein aggregates to which RNA is associated. They are called
A.
B.
C.
D.
E.
6.  Amino acids are transported to the ribosome for use in building the polypeptide by
A.
B.
C.
D.
E.
7.  The process in which an RNA polymerase molecule assembles an mRNA molecule whose nucleotide sequence is complementary to the DNA sequence is called
A.
B.
C.
D.
E.
8.  Similar to the complementary purine-pyrimidine relationship observed in DNA, which of the following choices pairs with adenine in RNA?
A.
B.
C.
D.
9.  The nucleotide sequence of a mRNA codon is composed of how many bases?
A.
B.
C.
D.
E.
10.  The hereditary information in DNA is conveyed through the
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E.
11.  Protein synthesis takes place on
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D.
E.
12.  Ribosomes are complex arrangements of
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E.
13.  The sites A, P, and E are progressively occupied by amino acids being assembled into a chain in protein synthesis. These sites are part of
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D.
E.
14.  Each amino acid has a specific tRNA molecule that can transport it to the site of protein synthesis. Therefore, in humans the number of different tRNA molecules would be
A.
B.
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D.
E.
15.  In eukaryotic cells, mRNA is made as a copy of the DNA coding information in the
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D.
E.
16.  Gene expression includes which two of the following processes?
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B.
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D.
E.
17.  The enzyme that initiates transcription is
A.
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D.
E.
18.  Because nucleic acid sequence information is changed into amino acid sequence information, polypeptide synthesis is known as
A.
B.
C.
D.
E.
19.  The number of nucleotides required to specify an amino acid is
A.
B.
C.
D.
E.
20.  The genetic code operates on all the following principles except
A.
B.
C.
D.
21.  How many unique mRNA codons can be constructed from the four different RNA nucleotides?
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B.
C.
D.
E.
22.  The 3-nucleotide sequence of an mRNA is called the
A.
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E.
23.  Besides the triplet nature of the genetic code, the other major piece of information that was provided by Crick and his coworkers is that
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B.
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D.
E.
24.  The tRNA nucleotide sequence that lines up on the mRNA is
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B.
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D.
E.
25.  Protein synthesis proceeds by the ribosome
A.
B.
C.
D.
E.
26.  Specific amino acids are attached to tRNA molecules by
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B.
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D.
E.
27.  The codons that serve as "stop" signals for the protein synthesis are called
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D.
E.
28.  The bond that forms between the newly added amino acid and the previous amino acid on the chain is called a
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D.
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29.  The initiation complex for protein synthesis contains all of the following except
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B.
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D.
E.
30.  The different components of the protein synthesizing machinery include all of the following except
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B.
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D.
E.
31.  Eukaryotic mRNA molecules are occasionally interspersed with non-coding sequences that must be removed before protein synthesis. These are called
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E.
32.  The location of protein synthesis in eukaryotic cells is the
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D.
E.
33.  In eukaryotes, mRNA processing involves all of the following events except
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B.
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D.
E.
34.  In eukaryotes, the empty RNA molecules exit the ribosome from the
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D.
E.
35.  The Central Dogma of biology is stated as
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D.
36.  The transfer of information from DNA to mRNA is referred to as
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E.
37.  If the sequence of bases in a section of DNA is ATCGCTCC, what is the corresponding sequence of bases in mRNA?
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B.
C.
D.
E.
38.  If the DNA triplet code were ATG CGT, the tRNA anticodons would be
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B.
C.
D.
39.  Humans and a bacterium make human insulin. How is this possible?
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B.
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E.
40.  There are 45 different kinds tRNA (anticodons) available to serve as amino acid carriers, but there are 64 mRNA codons. Why aren't the tRNA anticodons and mRNA codons equal in number?
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B.
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D.
41.  Eukaryotic organisms and prokaryotic organisms differ in how gene information is processed. Select the statement that best explains this difference.
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B.
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D.
42.  Transcription is the first stage in the Central Dogma. Transcription is initiated by
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D.
43.  Initiation of transcription differs from initiation of DNA replication in several ways. One such difference is that transcription does not require
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D.
44.  Transcription in prokaryotes is carried out by the enzyme _______, which unwinds and transcribes the gene.
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B.
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45.  Prokaryotes have one type of RNA polymerase. Eukaryotes have ____ types of RNA polymerase.
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B.
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46.  Eukaryotic mRNA molecules are modified
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47.  The 3' Poly-A tail is attached to
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48.  RNA splicing in eukaryotic cell protein synthesis means
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D.
49.  Noncoding DNA that interrupt the nucleotide sequence of a gene are called
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B.
C.
D.
E.
50.  Consider the following sequence: 5'AUGGCUACAGAUAGCUGGGGCUGAAAAAAAAAAAAAAAA3' Translated, the corresponding protein contains how many amino acids?
A.
B.
C.
D.
51.  Consider the following sequence: 5'AUGGCUACAGAUAGCUGGGGCUGAAAAAAAAAAAAAAAA3' What is the anticodon for the codon GAU?
A.
B.
C.
D.
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