Biology 1 Chapter 13 Test

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

Griffith called the process he observed transformation because

• the mouse had been transformed.

• the harmful bacteria had been transformed.

• the harmless bacteria had been transformed.

• the experiment had been transformed.

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 is inside a bacteriophage? (Choose 2 Answers.)

• protein

• nucleic acid

• lipid

• carbohydrate

What do bacteriophages infect?

• mice.

• humans.

• viruses.

• bacteria.

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

• a. DNA contains phosphorus and no sulfur.

• b. Proteins contain phosphorus and no sulfur.

• c. DNA contains sulfur and little phosphorous.

• d. Proteins acids contain sulfur and little phosphorous.

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

• A

• B

• C

• D

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.

This figure shows the structure of

• a DNA molecule.

• an amino acid.

• a RNA molecule.

• a protein.

Based on Chargaff’s rule, the percentages of guanine bases in chicken DNA should be around

• 28.8%

• 19.9%

• 21.5%

• 13.4%