Sem2 Unit 2 Quiz 1

Which combination of bacteria killed the mice in Griffith’s experiment, demonstrating transformation?

• Heat-killed R-strain and live S-strain

• Heat-killed S-strain and live R-strain

• Heat-killed bacteria of both strains

• Live bacteria of both strains

Which molecule was identified as the genetic material in transformation experiments?

• Lipids

• Proteins

• DNA

• RNA

Tags

NGSS.HS-LS1-1

What is the function of bacteriophages?

• To infect bacteria

• To infect viruses

• To destroy bacterial DNA

• To transport proteins

What was the purpose of using phosphorus-32 and sulfur-35 in the Hershey-Chase experiment?

• To track DNA and sugars

• To track DNA and proteins

• To remove DNA and sugars

• To combine DNA and proteins

Which of the following is NOT a function of DNA?

• Storing genetic information

• Instructing cells to produce molecules

• Copying itself

• Moving throughout the cell

Which part of a nucleotide varies between different DNA molecules?

• 5-carbon sugar

• Phosphate group

• Nitrogenous base

• Nucleic acid

What are the three components of a nucleotide from left to right?

• 5-carbon sugar, nitrogenous base, phosphate group

• Nucleic acid, 5-carbon sugar, amino group

• 5-carbon sugar, nitrogenous base, carboxyl group

• Nitrogenous base, 5-carbon sugar, phosphate group

What did Rosalind Franklin’s X-ray diffraction images reveal about DNA?

• The nitrogenous bases are on the outside

• DNA is twisted into a helix

• DNA is single-stranded

• DNA consists of only three bases

Which type of bonds hold the two strands of DNA together?

• Ionic bonds

• Covalent bonds

• Hydrogen bonds

• Peptide bonds

What is Chargaff’s Rule regarding DNA bases?

• Adenine always pairs with guanine

• The amount of adenine approximates thymine

• DNA base amounts are the same in all species

• Cytosine pairs with adenine