DNA Replication

Which bacteria killed the mice in Griffith’s transformation experiment?

• live, harmless bacteria and heat-killed, harmful bacteria

• live, harmless bacteria and heat-killed, harmless bacteria

• live harmful bacteria and heat-killed, harmless bacteria

• live harmless bacteria, and live, harmful bacteria

What did Avery conclude caused transformation?

• DNA was the transforming factor.
• A protein was the transforming factor.
• A carbohydrate was the transforming factor.
• A lipid was the transforming factor.

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

• The bacteria transformed.

• The mouse lived.

• The mouse died

• The bacteria died

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?

• The harmless bacteria would have been transformed, and the mice would have died.

• The harmless bacteria would not have been transformed, and the mice would have lived.

• The harmless bacteria would not have been transformed, and the mice would have died.

• The harmless bacteria would have been transformed, and the mice would have lived.

What property of DNA does bacterial transformation illustrate?

• Bacterial DNA cannot move into other bacteria and function.

• Bacterial DNA can move into another bacteria and function.

• Bacterial DNA uses four nucleotides bases that work in pairs.

• Bacterial DNA is found in a circular chromosome.

Griffith’s experiments advanced the study of genetics by proving that

• there is a chemical that contains genetic information that can be passed from one organism to another.

• bacteria can make people sick by infecting them with a chemical that contains genetic information.

• the bacteria that can make mice sick are the same bacteria that can be grown in culture dishes in a laboratory.

• genetic information can be passed from parents to their offspring during sexual reproduction.

Why did Hershey and Chase label the viral DNA with radioactive phosphorous and not radioactive sulfur?

• DNA contains phosphorus and no sulfur.

• Proteins contain phosphorus and no sulfur.

• DNA contains sulfur and little phosphorous.

• Proteins acids contain sulfur and little phosphorous.

Which part of the bacteriophage contains genetic material?

• A

• B

• C

• D

What happens when a piece of DNA is missing?

• Genetic information is stored.

• Genetic information is copied.

• Genetic information is lost.

• Genetic information is transmitted.

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In what way is DNA like a book?

• DNA has information organized with an kind of index.

• DNA has stored information, that can be copied and passed on.

• DNA has information wrapped in an identifying cover.

• DNA has information that is periodically updated.

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