DNA Structure + Experiments

The concept that DNA is made of two strands running in opposite directions is called:

• Antiparallel

• double helix

• transformation

• right-handed structure

DNA is a polymer made of:

• Nucleotides
• Ribosomes
• Purines
• Pyrimidines

The person who discovered the material in the nucleus, called NUCLEIN, was:

• Meischer

• Griffith

• Levene

• Chargaff

Who's work concluded that the % Adenine= % Thymine and % Guanine =% Cytosine?

• Chargaff

• Meischer

• Levene

• Griffith

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

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

Where is DNA located inside of cells?

• cell membrane

• vacuole

• chloroplast

• nucleus

What are the 4 nitrogen bases?

• adenine, thymine, cytoplasm, and guanine
• adenine, thymine cytosine, and guanine
• adenine, thymine, cytosine, and gylcerol
• adenine, thymine, cytosine, and glucose

Which 2 molecules form the sides (backbone) of the DNA ladder?

• deoxyribose sugar and adenine
• deoxyribose sugar and a hydrogen bond
• deoxyribose sugar and the nucleus
• deoxyribose sugar and phosphate

What was Watson and Crick's main scientific accomplishment?

• Building the first accurate model of DNA
• Isolating strains of pneumonia causing bacteria
• Determining base pairing rules
• Discovering the process of genetic transformation