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20 Cards in this Set

  • Front
  • Back

Which bacteria killed the mice in Griffin's transformation experiment?


A) live, harmless bacteria and heat killed harmful bacteria


B) live harmless bacteria and heat killed harmless bacteria


C) live harmful bacteria and heat killed harmless bacteria

A

Griffith called the process he observed transformation because


A) the mouse had been transformed


B) the harmful bacteria had been transformed


C) the harmless bacteria had been transformd

C

What happened when Griffith injected mice with the harmless, R-strain bacteria alone?


A) the bacteria transformed


B) the mouse lived


C) the mouse died

B

What property of DNA does bacterial transformation illustrate?


A) Bacterial DNA cannot move into other bacteria and function


B) bacterial DNA can move into another bacteria and function


C) bacterial DNA uses four nucleotides bases that work in pairs

B

What is inside a bacteriophage?


A) Protein


B) DNA


c) lipid

B

What do bacteriophases infect?


A) mice


B) humans


C) bacteria

C

What enzyme breaks the hydrogen bonds between DNA strands at the beginning of DNA replication?


A) DNA helix


B) lyase


C) helicase

C

In which cells is the accurate transmission of information most important?


A) nerve cells


B) skin cells


C) sex cells

C

Which of the following is a nucleotide found in DNA?


A) adenine + phosphate group + thymine


B) cytosine + phosphate ground + guanine


C) deoxyribose + phosphate group + cytosine

C

What did Rosalind Franklin contribute to the effort to identify the structure of DNA?


A) models made of cardboard and wire showing the shape of DNA


B) the ratios of the two sets of nucleotide pairs in DNA


C) x-ray diffraction photos of the DNA molecule



C

Watson and Crick discovered the two strands in DNA


A) are not connected


B) have bases facing outward


C) form a double helix

C

DNA replication results in two DNA molecules


A) each with two new strands


B) one with two new strands and the other with two original strands


C) each with one new strand and one original strand

C

In eukaryotes, DNA


A) is located in the nucleus


B) floats freely in the cytoplasm


C) is located in the ribosomes

A

Which would be greater in a eukaryotes than in a prokaryote?


A) The percentage of guanine nucleotides


B) The total number of base pairs in a chromosome


C) The total amount of DNA in a cell

C

In both prokaryotes and eukaryotes, how many copies of the chromosome are left after replication?


A) 1


B) 2


C) 3

B

List two things DNA does with information

DNA undergoes replication to create more DNA. DNA is what starts the creation of proteins

What are the roles of covalent bonds and hydrogen bonds in the structure of DNA?

Covalent bonds hold together the deoxyribose sugar backbone. Hydrogen bonds hold the base pairs together

Label the three main components in the nucleotides

Label the three main components in the nucleotides

Left to right


Phosphate, deoxyribose sugar, base (nucleotide)

Since both protein and DNA were both radioactively labeled, how did the scientists determine that DNA was the material that infects the cell?

The phosphorous in DNA was located in the bacteria. Protein has sulfur which wasn't found in the bacteria

Explain what happened to the bacteria and the mice in experiment 4 ( mixture of heat killed S strain and live R strain)

Alone, the heat killed S strain would still kill the mouse. The live R strain would not kill the mouse. Mixing the heat killed S strain and live harmless R strain would kill the mouse because the DNA of the R strain was transformed.