DNA History, Structure, & Replication

Which scientists built a 3-D model of the DNA double helix?

• Hershey and Chase

• Watson and Crick

• Chargaff and Franklin

• Griffith and Avery

Rosalinda Franklin discovered that DNA was ________________.

• square

• helix or spiral

• circular

• rectangular

What does a double helix look like?

• Twisted ladder

• Upside down ladder

• Sideways ladder

• Double circle

Who used x-ray crystallography to see the shape of DNA?

• Watson

• Chargaff

• Franklin

• Crick

Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.

• DNA
• protein
• RNA
• glucose nucleic acid (GNA)

How did Rosalind Franklin's photo 51 affect the work of Watson and Crick?

• It was used to determine the physical structure of DNA
• It was used to identify the four bases that make up DNA
• It was used to determine the theory of independent assortment
• It was used to show DNA was the molecule of inheritance

The image illustrates which of the following structures?

• Amino acid
• Nucleotide
• Protein
• Peptide Bond

Identify the 5-carbon (aka pentose) sugar found in a molecule of DNA.

• Ribose

• Deoxyribose

• Glucose

• Lactose

The process of DNA replication occurs in which organelle?

• Cytoplasm
• Ribosome
• Nucleus
• Mitochondria

In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of

• cytosine
• guanine
• thymine
• uracil