TEST - Ch 13 & 14 DNA, RNA, Protein Synthesis

Griffith’s Experiment set out to show that genetic material could be transferred from one cell to another, causing transformation of the cell.

• true
• false

Avery’s experiment did not help our understanding of DNA.

• true

• false

What do bacteriophages infect?

• mice
• humans
• viruses
• bacteria

What question did the Hershey-Chase Experiments seek to answer?

• Is protein or DNA the carrier of genetic (hereditary) information?
• How do bacteriophages infect healthy cells?
• How do radioactive isotopes enter cells?
• None of these

How did Hershey and Chase know that it was the DNA that had infected the bacterial cells in their experiment?

• They found nothing inside the bacterial cells.
• They found the radioactive isotopes attached to the protein, not the DNA molecules.
• They found the radioactive isotopes attached to the DNA molecules, not protein.
• None of these

The function of DNA is to

• Store genetic information
• Copy genetic information
• Transmit genetic information
• All of these

Identify the three main components in the nucleotides shown here.

• Phosphate group, deoxyribose (5 carbon sugar), nitrogenous base

• Phosphate group, ribose (5 carbon sugar), nitrogenous base

• Nitrogen group, deoxyribose (5 carbon sugar), phosphate base

• None of these

Chargaff’s Rule showed that DNA is a symmetrical molecule because he found

• The amounts of A and T and of C and G are almost always equal.
• The amounts of A and C and of T and G are almost always equal.
• All of the nucleotides had the same mass
• Each nucleotide had a different mass

Rosalind Franklin was instrumental in discovering that the DNA molecule was a helix by using what technology?

• Infrared light
• X-rays
• Chromatography
• None of these

How can the Watson-Crick model of DNA structure be described?

• Single helix
• Single stranded
• Double helix
• None of these