Week 8 -- DNA

Who crystallized DNA and used x-rays to take pictures of DNA, showing its helical shape?

• Erwin Chargaff

• James Watson & Francis Crick

• Rosalind Franklin

• Sanger Technique

What did James Watson and Francis Crick develop in 1953?

• The base pairing rules for DNA

• The chain termination method for sequencing DNA

• The double helix model of the structure of DNA

• CRISPR-Cas9 Gene Editing Technology

Who discovered that the genetic material in a bacteriophage was DNA?

• Hershey & Chase

• Griffith

• Avery

• Watson & Crick

Who discovered..

1) the amount of A is always equal to the amount of T

2) the amount of C is always equal to the amount of G

3) A & G have 2 rings while C & T have 1 ring, creating a uniform length throughout the helix

• Chargaff

• Franklin

• Watson & Crick

• Griffith

The monomer of a DNA polymer is known as a

• gene

• nucleotide

• nucleolus

• amino acid

What aspect of DNA's structure allows it to be easily copied from parent to daughter?

• antiparallel strands

• semiconservative replication

• double helix

• Chargaff's rules on nitrogenous bases

The sugar-phosphate backbone of a DNA molecule is made of ______ bonds, and the nitrogenous bases of a DNA molecule are held together by ______ bonds.

• covalent, hydrogen

• hydrogen, covalent

• ionic, hydrogen

• covalent, ionic

Which of the following is the complementary sequence for this strand of DNA?

5' - CCC TGG GCT CTG - 3'

• 3' - ACT GTT AGA TTC - 5'

• 3' - GGG ACC CGA GAC - 5'

• 5' - GGG ACC CGA GAC - 3'

• 3' - CCC TGG GCT CTG - 5'

• 5' - CCC TGG GCT CTG - 3'

Which enzyme unwinds the DNA double-helix to start the replication process?

• Helicase

• SSBP

• Primase

• DNA Polymerase

• Ligase

Which enzyme creates a starting point for DNA replication?

• Helicase

• SSBP

• Primase

• DNA Polymerase

• Ligase