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Quiz von Jack Alkema, aktualisiert more than 1 year ago
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Erstellt von Jack Alkema
vor mehr als 7 Jahre
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Frage 1
Frage
What would have happened if Avery had added an enzyme that digested all the nucleic acids to the mixture of heat-killed bacteria, added the mixture to harmless bacteria, and injected the mixture into mice?
Antworten
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The harmless bacteria would have been transformed, and the mice would have died.
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The harmless bacteria would have been transformed, and the mice would have lived.
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The harmless bacteria would not have been transfromed, and the mice would have lived.
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The harnless bacteria would not have been transformed, and the mice would have died.
Frage 2
Frage
What is inside a bacteriophage?
Antworten
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nucliec acid
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carbohydrate
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protein
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lipid
Frage 3
Frage
In what way is DNA like a book?
Antworten
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DNA has information wrapped in an identifying cover.
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DNA has information organized with an kind of index.
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DNA has information that is periodically updated.
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DNA has stored information, that can be copied and passed on.
Frage 4
Frage
In which cells is the accurate transmission of information most important?
Antworten
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sex cells
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nerve cells
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bone cells
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skin cells
Frage 5
Frage
Which of the following is a nucleotide found in DNA?
Antworten
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deoxyribose + phosphate group + polymerase
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deoxyribose + phosphate group + cytosine
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adenine + phosphate group + thymine
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cytosine + phosphate group + guanine
Frage 6
Frage
The table in Figure 12–3 shows the results of measuring the percentages of the four bases in the DNA of several different organisms. Some of the values are missing from the table. Based on Chargaff’s rule, the percentages of guanine bases in chicken DNA should be around
Antworten
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19.9%
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21.5%
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13.4%
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28.8%
Frage 7
Frage
Based on Chargaff’s rule, the percentage of cytosine in the DNA of the bacterium, S. Lutea in Figure 12–3, should be around
Antworten
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73.2
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29.4%.
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26.6%.
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36.6%.
Frage 8
Frage
Which scientist made x-ray diffraction photos of DNA?
Antworten
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Chargaff
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Avery
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Franklin
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Watson
Frage 9
Frage
What is the chronological order of the important discoveries in the structure of DNA?
Antworten
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Griffith-->Avery --> Hershey & Chase--> Franklin makes an X-ray diffraction photo of DNA --> Watson and Crick identify the double helix --> Chargaff’s ratios of nucleotides
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Griffith-->Avery --> Hershey & Chase--> Chargaff’s ratios of nucleotides --> Franklin makes an X-ray diffraction photo of DNA --> Watson and Crick identify the double helix
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Griffith-->Avery --> Hershey & Chase--> Franklin makes an X-ray diffraction photo of DNA --> Chargaff’s ratios of nucleotides --> Watson and Crick identify the double helix
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Griffith-->Avery --> Hershey & Chase--> Chargaff’s ratios of nucleotides --> Watson and Crick identify the double helix --> Franklin makes an X-ray diffraction photo of DNA
Frage 10
Frage
Watson and Crick discovered the two strands in DNA
Antworten
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run in oppisite directions.
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run in random directions.
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run in perpendicular directions.
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run in the same direction.
Frage 11
Frage
Which bacteria killed the mice in Griffin’s transformation experiment?
Antworten
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live harmful bacteria and heat-killed, harmless bacteria
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live harmless bacteria, and live, harmful bacteria
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live, harmless bacteria and heat-killed, harmful bacteria
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live, harmless bacteria and heat-killed, harmless bacteria
Frage 12
Frage
Griffith called the process he observed transformation because
Antworten
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the harmless bacteria had been transformed.
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the experiment had been transformed.
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the mouse has been transformed.
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the harmful bacteria had been transformed.
Frage 13
Frage
What did Avery conclude caused transformation?
Antworten
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A protein was the transforming factor.
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A carbohydrate was the transforming factor.
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DNA was the transforming factor.
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A lipid was the transforming factor.
Frage 14
Frage
What do bacteriophages infect?
Antworten
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viruses.
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bacteria.
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mice.
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humans.
Frage 15
Frage
Why did Hershey and Chase label the viral DNA with radioactive phosphorous and not radioactive sulfur?
Antworten
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DNA contains sulfur and little phosphorous.
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Proteins acids contain sulfur and little phosphorous.
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DNA contains phosphorus and no sulfur.
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Proteins contain phosphorus and no sulfur.
Frage 16
Frage
Which part of the bacteriophage in Figure 12–1 is the genetic material?
Antworten
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A
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B
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C
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D
Frage 17
Frage
Figure 12–2 shows the structure of (not the structure labeled X, the whole figure.)
Antworten
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a RNA molecule.
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a protein.
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A DNA molecule.
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an amino acid.
Frage 18
Frage
Because of base pairing in DNA, the percentage of
Antworten
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adenine molecules in DNA is much greater than the percentage of thymine molecules.
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cytosine molecules in DNA is much greater than the percentage of guanine molecules.
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adenine molecules in DNA is about equal to the percentage of guanine molecules.
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thymine molecules in DNA is about equal to the percentage of adenine molecules
Frage 19
Frage
Which two bases pair together in DNA?
Antworten
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thymine and cytosine
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cytosine and guanine
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adenine and guanine
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guanine and thymine
Frage 20
Frage
What would Hershey and Chase have concluded if both radioactive 32P and 35S were found in the bacteria in their experiment?
Antworten
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Genes are made of protein and carbohydrates.
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Both the virus’s protein coat and its DNA were injected into the bacteria.
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The virus’s protein coat was not injected into the bacteria.
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The virus’s DNA was not injected into the bacteria.
Frage 21
Frage
Bacteriophages inject protein into bacteria, altering the bacteria’s genetic information.
Antworten
- True
- False
Frage 22
Frage
DNA is a nucleic acid made up of nucleosomes joined into long strands or chains by covalent bonds.
Antworten
- True
- False
Frage 23
Frage
The three parts of a DNA nucleotide are the phosphate group, deoxyribose, and the base.
Antworten
- True
- False
Frage 24
Frage
When Griffith destroyed the DNA in his mixture containing various molecules from heat-killed bacteria, transformation no longer occurred.
Antworten
- True
- False
Frage 25
Frage
Watson and Crick discovered that covalent bonds hold base pairs together at the center of a strand of DNA.
Antworten
- True
- False
Frage 26
Frage
The structure labeled X in Figure 12–2 is a(an) [blank_start]_________________________[blank_end].
Antworten
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nucleotide
Frage 27
Frage
The matching strand to the one in Figure 12–7, reading from the bottom up, would be [blank_start]_________________________[blank_end].
Antworten
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AGCT
Frage 28
Frage
The Watson and Crick model of DNA is a(an) [blank_start]_________________________[blank_end], in which two strands are wound around each other.
Antworten
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double helix
Frage 29
Frage
In figure 12–8, the percentage of guanine would be [blank_start]_________________________[blank_end].
Antworten
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20%
Frage 30
Frage
What stores information in a cell?
Antworten
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LIpid
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Carbohydrate
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DNA
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Protein
Frage 31
Frage
Interpret Visuals What process did Griffith identify in the series of experiments in Figure 12–11? [blank_start]d[blank_end]
Antworten
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transformation
Frage 32
Frage
Compare and Contrast In which experiments in Figure 12–11 do the mice live?
[blank_start]d[blank_end]
Antworten
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Experiments 2 and 3
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