Chapter 12 Biology

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

• live harmless bacteria, and live, harmful bacteria

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

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

• live harmful bacteria and heat-killed, harmless bacteria

Griffith called the process he observed transformation because

• the harmful bacteria had been transformed.

• the experiment had been transformed.

• the mouse had been transformed.

• the harmless bacteria had been transformed

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 not 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 have been transformed, and the mice would have lived.

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

What did Avery conclude caused transformation?

• A protein was the transforming factor

• A carbohydrate was the transforming factor.

• DNA was the transforming factor.

• A lipid was the transforming factor.

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What do bacteriophages infect?

• Yo mama.

• bacteria

• humans.

• mice.

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

• DNA contains phosphorus and no sulfur.

• DNA contains sulfur and little phosphorous.

• Proteins acids contain sulfur and little phosphorous.

• Proteins contain phosphorus and no sulfur.

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Which part of the bacteriophage in Figure 12-1 contains genetic material?

• B

• C

• A

• D

What stores information in a cell?

• DNA

• lipids

• carbohydrates

• proteins

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What happens when a piece of DNA is missing?

• Genetic information is transmitted.

• Genetic information is lost.

• Genetic information is stored.

• Genetic information is copied.

In what way is DNA like a book?

• DNA has information organized with an kind of index.

• DNA has information wrapped in an identifying cover.

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

• DNA has information that is periodically updated.

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