Unit 4 Page 1: Discovery & Structure of DNA

Multiple Choice

DNA is a macromolecules of ___

• Proteins
• Lipids
• Nucleic Acids
• Carbohydrates

Multiple Choice

A nucleotide is the building block of:

• DNA

• Protein

• Cell membranes

• Mitochondria

Match

Match the following parts of DNA

Deoxyribose

Sugar

Nitrogen Base

Phosphate Group

Nucleotide

• Deoxyribose

  Sugar

• Nitrogen Base

• Phosphate Group

• Nucleotide

Multiple Choice

Which of the following is NOT a part of a nucleotide?

• Phosphate group

• Nitrogen base

• Deoxyribose sugar

• Amino acid

Multiple Choice

Name this structure

• double helix
• nucelotide
• twisted ladder
• hydrogen bond

Labeling

Label the nucleotide

Drag labels to their correct position on the image

deoxyribose sugar

nitrogen base

nucleotide

phosphate group

Multiple Choice

When was DNA discovered?

• In the 1920s

• In the 1950s

• In the 1800s

• In the 2000s

Multiple Choice

Franklin used x-ray crystallography to determine the shape of the DNA molecule is

• a cloverleaf
• a braided rope
• a pleated sheet
• a twisted ladder

Multiple Choice

If one strand of a DNA molecule has the following order of bases, what will be the correct order of bases on the complementary strand?

AATTGGCC

• AATTGGCC

• TTAACCGG

• GGCCAATT

Multiple Choice

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

• 30
• 15
• 20
• 60

Multiple Select

Which of the following statements about base pairing in DNA are correct?

• Adenine always bonds with Thymine

• Guanine always bonds with Cytosine

• Adenine always bonds with Guanine

• Cytosine always bonds with Thymine

Multiple Choice

What was Watson and Crick's main scientific accomplishment?

• Building the first 3-D model of DNA structure

• Isolating strains of pneumonia causing bacteria
• Determining base pairing rules