DNA History and Structure

Who is responsible for producing this image?

• Francis Crick
• James Watson
• Rosalind Franklin
• Watson and Crick

What does this image show?

• Double helical structure of DNA
• Triple Helical Structure of DNA
• Double helical structure of RNA
• Triple Helical Structure of RNA

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

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

The work of Erwin Chargaff allowed Watson and Crick to determine the rules of.......

• protein synthesis
• transcription
• hydrogen bonding
• nitrogen base pairing

Rosalind Franklin's "Photo 51" allowed Watson and Crick to determine the _______ of DNA.

• Shape
• Backbone
• Nitrogen bases
• Hydrogen bonds

DNA is an acronym for _____

• Diphosphorus Nucleic Acid

• Ribose Nucleic Acid

• Deoxyribonucleic Acid

• Deoxyribonucleic Acetate

The human body contains ____ chromosomes and ___ cells

• 23 pairs of chromosomes and 75 million cells

• 46 pairs of chromosomes and 150 trillion cells

• 48 pairs of chromosomes and 75 trillion cells

• 23 pairs of chromosomes and 75 trillion cells

Primary functions of DNA are (mark all that apply)

• Transmit information on heredity from one generation to the next

• Control cellular respiration

• Regulate homeostasis

• Provide a blueprint for making proteins

A nucleotide is composed of

• A phosphate, sugar and nitrogenous base

• A protein, protein and Guanine

• A phosphate, Adenine, and nitrogenous base

• A protein, Adenine and nitrogenous base