DNA structure 2

Which 2 nitrogen bases are purines?

• adenine and thymine
• thymine and guanine
• guanine and adenine
• cytosine and thymine

Which 2 nitrogen bases are pyrimidines?

• thymine and cytosine
• thymine and guanine
• adenine and guanine
• adenine and thymine

What is the shape of DNA?

• helix
• single helix
• double helix
• triple helix

Name this structure

• double helix
• nucelotide
• twisted ladder
• hydrogen bond

Tags

NGSS.HS-LS1-1

Nucleotides are made up of a sugar, phosphate, and..?

• nitrogenous base
• nucleic acid
• cholesterol
• fatty acid

Who was NOT awarded the Nobel Prize for their part (use of X-ray crystallography) in discovering the helical structure of DNA?

• Rosalind Franklin

• Francis Crick

• James Watson

• Maurice Wilkins

A five-carbon sugar found in DNA.

• ribose
• guanine
• deoxyribose
• helicase

What 3 parts make up the DNA molecule?

• Phosphate group, deoxyribose sugar, nitrogenous base
• Phosphate group, amino acid, deoxyribose sugar
• Protein, phosphate group, nitrogenous base
• Amino acid, protein, carbohydrate

Thymine is a _________, and Guanine is a ______?

• purine, pyrimidine
• pyrimidine, purine
• purine, hydrogen
• hydrogen, purine

If the percentage of DNA is made of 30% Thymine, what is the correct percentage of Guanine?

• 30
• 15
• 20
• 60