Question 1

The genetic code was deciphered

Accepted Answer

A)  in the year 2000,following several years of the human genome project.
B)  in the 1980s,as many Mendelian diseases had their genes identified.
C)  in the 1960s.
D)  in the 1950s.

Question 2

Which of the following descriptions of genetic information flow best illustrates the central dogma of biology?

Accepted Answer

A)  DNA to RNA to protein
B)  RNA to DNA to protein
C)  protein to DNA to protein
D)  protein to RNA to DNA

Question 3

_____ tRNAs are required to translate the DNA template sequence GTTACTCTGTGGGCT into amino acids.3-26-2013

Accepted Answer

A)  Two
B)  Three
C)  Four
D)  Twenty

Question 4

The sequences UUUUUUUUU ¼,AAAAAAAAA¼,and CCCCCCCCC¼,were the first to be analyzed to crack the genetic code because

Accepted Answer

A)  they were the simplest to synthesize.
B)  they would encode all types of amino acids.
C)  they would encode only one type of nucleotide.
D)  they would encode only one type of amino aciD.

Question 5

A signal sequence

Accepted Answer

A)  directs RNA nucleotides to a particular gene.
B)  attracts tRNAs to an mRNA.
C)  is the first part of a protein's amino acid sequence that helps to direct it to a certain part of the cell.
D)  is a coding codon that mutates into a stop codon.

Question 6

Which of these is not found in RNA?

Accepted Answer

A)  phosphate
B)  deoxyribose
C)  purines
D)  ribose

Question 7

RNA differs from DNA in that

Accepted Answer

A)  it is usually single-stranded.
B)  it is usually double-stranded.
C)  it has thymine instead of uracil.
D)  it has deoxyribose instead of ribose.

Question 8

If part of a DNA template is the sequence GTTAGTCTGTGGGCT,then the mRNA transcribed from it is

Accepted Answer

A)  GTTAGTCTGTGGGCT.
B)  CAATCAGACACCCGA.
C)  CAAUCAGACACCCGA.
D)  gln-ser-asp-thr-arg.

Question 9

A sequence of DNA could have _____ possible reading frame(s) .

Accepted Answer

A)  two
B)  three
C)  four
D)  an infinite number of

Question 10

The DNA template ATGCGTTA is transcribed into an RNA strand with the sequence

Accepted Answer

A)  TACGCAAT.
B)  UAACGCAU.
C)  UACGCAAU.
D)  AUGCGAAU.

Question 11

Watson and Crick describe the relationship between _____ as a directional flow of information called the "central dogma".

Accepted Answer

A)  nucleic acids and proteins
B)  enzymes and proteins
C)  peptides and polypeptides
D)  DNA and RNA

Question 12

To express a gene,DNA is first transcribed into a corresponding strand of

Accepted Answer

A)  mtDNA.
B)  rRNA.
C)  mRNA.
D)  tRNA.

Question 13

Parts of an mRNA molecule that are removed before protein synthesis are called

Accepted Answer

A)  exons.
B)  exomes.
C)  promoters.
D)  introns.

Question 14

B is an intron between two exons, A and C. Which representation best describes how this region of mRNA will appear after it is transcribed and processed by a spliceosome?

Accepted Answer

A)  A-C
B)  A-B
C)  B-C
D)  A-B-C

Question 15

A mutation that changes one particular amino acid into another can affect the functioning of other amino acids farther away in the primary sequence due to

Accepted Answer

A)  the presence of prions.
B)  protein folding.
C)  jumping genes.
D)  the tendency for further mutations to occur.

Question 16

The linear order of amino acids in a polypeptide is the _____ structure of a protein.

Accepted Answer

A)  primary
B)  secondary
C)  tertiary
D)  quaternary

Question 17

The genetic code is

Accepted Answer

A)  triplet,overlapping,and not universal.
B)  triplet,non-overlapping,and universal.
C)  quarternary,overlapping,and non-universal.
D)  singular,non-overlapping,and universal.

Question 18

Ribosomal RNAs

Accepted Answer

A)  are translated from DNA.
B)  are synthesized by ribosomes.
C)  connect codons to amino acids.
D)  associates with proteins to form ribosomes.

Question 19

Which codons are synonymous?

Accepted Answer

A)  CAC and CAG
B)  CAC and CAU
C)  ACA and AGC
D)  UCC and GAC

Question 20

The large ribosomal subunit joins the initiation complex to begin _____ during translation.

Accepted Answer

A)  association
B)  initiation
C)  elongation
D)  termination

Exam 10: Gene Action: From DNA to Protein

A signal sequence

Correct AnswerverifiedShow Answer

The linear order of amino acids in a polypeptide is the _____ structure of a protein.

Correct AnswerverifiedShow Answer

B is an intron between two exons, A and C. Which representation best describes how this region of mRNA will appear after it is transcribed and processed by a spliceosome?

Correct AnswerverifiedShow Answer

A mutation that changes one particular amino acid into another can affect the functioning of other amino acids farther away in the primary sequence due to

Correct AnswerverifiedShow Answer

To express a gene,DNA is first transcribed into a corresponding strand of

Correct AnswerverifiedShow Answer

RNA differs from DNA in that

Correct AnswerverifiedShow Answer

The sequences UUUUUUUUU ¼,AAAAAAAAA¼,and CCCCCCCCC¼,were the first to be analyzed to crack the genetic code because

Correct AnswerverifiedShow Answer

Ribosomal RNAs

Correct AnswerverifiedShow Answer

The genetic code is

Correct AnswerverifiedShow Answer

A sequence of DNA could have _____ possible reading frame(s) .

Correct AnswerverifiedShow Answer

Parts of an mRNA molecule that are removed before protein synthesis are called

Correct AnswerverifiedShow Answer

If part of a DNA template is the sequence GTTAGTCTGTGGGCT,then the mRNA transcribed from it is

Correct AnswerverifiedShow Answer

The large ribosomal subunit joins the initiation complex to begin _____ during translation.

Correct AnswerverifiedShow Answer

_____ tRNAs are required to translate the DNA template sequence GTTACTCTGTGGGCT into amino acids.3-26-2013

Correct AnswerverifiedShow Answer

Which codons are synonymous?

Correct AnswerverifiedShow Answer

Which of these is not found in RNA?

Correct AnswerverifiedShow Answer

Which of the following descriptions of genetic information flow best illustrates the central dogma of biology?

Correct AnswerverifiedShow Answer

The genetic code was deciphered

Correct AnswerverifiedShow Answer

Watson and Crick describe the relationship between _____ as a directional flow of information called the "central dogma".

Correct AnswerverifiedShow Answer

The DNA template ATGCGTTA is transcribed into an RNA strand with the sequence

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified