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Worksheetsdna 3
Total questions: 96
Worksheet time: 1hrs 12mins
Who FIRST showed that DNA was the transforming factor?
Griffith
Avery
Chargaff
Franklin
What is a virus that infects bacteria called?
bacteriophage
infectious virus
transformation
gene change
Alone, R-bacteria caused pneumonia.
true
false
Bacteria can steal genes from other bacteria.
true
false
What type(s) of bacteria did Frederick Griffith work with?
Heat-killed smooth pneumonia
Smooth pneumonia
Heat-killed rough pneumonia
Rough pneumonia
What occurred when Griffith injected a mouse with the rough pneumonia?
The mouse lived
The mouse died
What occurred when Griffith injected a mouse with the smooth pneumonia?
The mouse lived
The mouse died
What occurred when Griffith injected a mouse with heat-killed smooth pneumonia?
The mouse lived
The mouse died
What occurred when Griffith injected a mouse with heat-killed smooth pneumonia mixed with rough pneumonia?
The mouse lived
The mouse died
Who FIRST showed that DNA was the transforming factor?
Griffith
Avery
Chargaff
Franklin
By using radioactive isotopes, Hershey and Chase were able to conclude that __ is/are the carrier(s) of genetic information.
Nucleic Acid/DNA
Proteins
Carbohydrates
Lipids
Avery added an enzyme known to break down DNA to his extract, and saw that the bacteria were __________________
still transformed even without DNA present
not transformed because DNA carries genetic info
still transformed because protein carries genetic info too
all killed
Avery added an enzyme known to break down PROTEINS to his extract, and saw that the bacteria were ____________________
still transformed because DNA was the genetic material not protein
not transformed because lipids are the genetic material
all killed
all of these
This scientist conducted experiments that involved injecting mice with heat killed harmful bacteria and harmless bacteria and concluding that TRANSFORMATION of the harmful genes to the living harmless bacteria killed the mice.
Avery
Griffith
Watson & Crick
Hershey & Chase
Hershey and Chase settled the debate about what makes up genetic material in the cell by only finding radioactive tracers on this macromolecule that were injected into bacteria by a bacteriophage.
Protein
DNA
Carbohydrates
All of These
The scientist(s) who labeled viruses with radioactive tags and settled the debate about whether it was proteins or DNA that was the genetic material of the cell
Avery
Hershey & Chase
Watson & Crick
Griffith
This scientist(s) destroyed the Protein, RNA and DNA of S-strain pneumonia cells to determine the "transforming principle" was DNA by process of elimination
Avery
Griffith
Franklin & Wilkins
Watson & Crick
In the early 1900s, most scientists thought it was _____________ that carried traits form parent to offspring.
Carbohydrates
Lipids
Proteins
DNA
Which scientist discovered transformation?
Frederick Griffith
Oswald Avery
Alfred Hershey
Martha Chase
Which strain of bacteria caused pneumonia in Griffith's experiments?
S-strain
R-strain
T-strain
B-strain
Which strain of bacteria was harmless in Griffith's experiments?
S-strain
R-strain
T-strain
B-strain
When the mixture of heat-killed S-strain and R-strain bacteria was injected into the mice, what happened?
The mice died
The mice remained healthy
The mice changed colors
The mice got mean
What is transformation?
The process in which one strain of bacteria is changed by a gene or genes from another strain of bacteria
The process in which one strain of bacteria is changed by a carbohydrate or carbohydrates from another strain of bacteria
The process in which one strain of bacteria is changed by a protein or proteins from another strain of bacteria
The process in which one strain of bacteria is changed by a lipid or lipids from another strain of bacteria
Who determined that DNA was the transforming factor in Griffith's experiments?
Frederick Griffith
Rosalind Franklin
Alfred Chase
Oswald Avery
What is a virus?
A tiny, living particle that can infect living cells
A large, living particle that can infect living cells
A tiny, nonliving particle that can infect living cells
A large, nonliving particle that can infect living cells
What is the type of virus that infects bacteria?
Invader virus
Virobacteria
Bacteriovirus
Bacteriophage
What part of the virus enters inside the bacteria?
Carbohydrates
Lipids
Proteins
DNA
What is the function of bacteriophage genes?
Produce more proteins
Produce new bacteriophages
Produce more healthy bacteria
Cause pneumonia
Which scientists concluded that the genetic material inside of the bacteriophage was DNA and not protein.
James Watson and Francis Crick
Frederick Griffith and Oswald Avery
Alfred Hershey and Martha Chase
Rosalind Franklin and Erwin Chargaff
What are the main functions of DNA? Select all that apply.
Store information
Copy information
Transmit information
Create information
Bacteriophages are
a form of bacteria
enzymes
coils of DNA
viruses
Before DNA could definitively be shown to be the genetic material in cells, scientists had to show that it could
tolerate high temperatures
carry and make copies of information
be modified in response to environmental conditions
be broken down in response to environmental conditions
The final proof as DNA as genetic material came from the experiment of
Griffith
Hershey and chase
Avery, Mcleod, & McCarty
Hargovind khorana
Bacteriophages are
Viruses
Bacteria
Prions
Viroids
Who discovered Bacteriophages
Watson& Crick
Felix d Herelle
Laderberg
Harshey & Chase
Transformation is
Formation of DNA from DNA
Formation of mRNA from DNA
Foreign DNA entryby Virus
Genetic alteration of a cell
Transduction is
Formation of DNA from DNA
Formation of mRNA from DNA
Formation of Protiens from mRNA
foreign DNA entry by Virus
T2 bacteriophage contains-
50%DNA+50%protein
60%DNA+40%protein
25%DNA +75%Protein
75% DNA+25% Protein
In Hershey Chase exp.,Protein tagging was done by-
Radioactive Phosphorus P37
Radioactive sulphur S 34
radioactive sulphur 35 S
radioactive Phosphorus 32 P
In Blender exp.,DNA tagging was done by-
Radioactive phosphorus P 37
Radioactive sulphur S 34
Radioactive sulphur S 35
Radioactive Phosphorus 32 P
Hershey-Chase exp.confirms that-
DNA is always formed from DNA in semiconservative manner.
Sulphur and Protein both enter in bacterial cell progeny.
DNA is genetic material,not protein.
Radioactive Phosphorus was only found in surrounding.
The Bacteria used for confirmation of DNA was-
Staphylococci
E.coli
Salmonella typhimurium
Clostridium tetani
All cells contain 4 classes of macromolecules: carbohydrates, lipids, proteins, and nucleic acid's. Whose experiment showed that nucleic acids are the kind of macromolecule that codes genetic traits?
griffith
oswald & avery
both experiments
neither experiment
What was the independent variable in Oswald & Avery's experiment?
whether the mice were injected with living R cells or living S cells
Whether the mice died of pneumonia or whether they lived
Whether the molecules from killed S bacteria were treated to destroy DNA, RNA, or protein.
Whether or not the R bacteria were transformed into S bacteria
What was the dependent variable in Chargaff's top experiment?
How the identities and percentages of different purine & pyrimidine nucleotides compared in DNA of different species
Which species contributed the DNA that was analyzed
Which tissue of the same organism contributed the DNA being analyzed
The analysis of DNA's purine and pyrimidine content
Who conducted this experiment showing that some chemical in S bacteria can control and change--transform--other bacteria to give them different genetic & hereditary characteristics?
avery and his lab members
griffith
Franklin
Chargaff
Who utilized the "blender experiment" in their research?
Erwin Chargaff
Alfred Hershey & Martha Chase
Francis Crick
Rosalind Franklin
The final proof as DNA as genetic material came from the experiment of
Griffith
Hershey and chase
Avery, Mcleod, & McCarty
Hargovind khorana
Bacteriophages are
Viruses
Bacteria
Prions
Viroids
Transformation is
Formation of DNA from DNA
Formation of mRNA from DNA
Foreign DNA entryby Virus
Genetic alteration of a cell
In Blender exp.,DNA tagging was done by-
Radioactive phosphorus P 37
Radioactive sulphur S 34
Radioactive sulphur S 35
Radioactive Phosphorus 32 P
In Hershey Chase exp.,Protein tagging was done by-
Radioactive Phosphorus P37
Radioactive sulphur S 34
radioactive sulphur 35 S
radioactive Phosphorus 32 P
Hershey-Chase exp.confirms that-
DNA is always formed from DNA in semiconservative manner.
Sulphur and Protein both enter in bacterial cell progeny.
DNA is genetic material,not protein.
Radioactive Phosphorus was only found in surrounding.
