DNA history and structure

The image illustrates which of the following structures?

• Amino acid
• Nucleotide
• Protein
• Peptide Bond

Tags

NGSS.HS-LS1-6

Identify the 5-carbon 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

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

Which of the following best describes a DNA molecule?

• double helix
• contains ribose
• made of amino acids
• contains Uracil

Tags

NGSS.HS-LS1-1

Erwin Chargaff discovered what feature regarding DNA

• The Helical structure
• The constant ratio of the bases
• The Sugar-Phosphate Backbone
• The length of a strand of DNA

The work of scientists including Griffin, Avery, Hershey & Chase and Franklin helped us to determine the __ are responsible for carrying genetic material.

• Amino Acids
• Proteins
• Nucleic Acids
• Carbohydrates

What did Erwin Chargaff conclude from his experiments?

• Nitrogen bases are held together by peptide bonds
• A and T, C and G always occur in equal amounts
• Proteins are the carriers of genetic information
• C and G rarely occur in eukaryotic organisms

Which of the following is a base that is NOT contained in DNA?

• Adenine
• Thymine
• Uracil
• Guanine