DNA Unit Exam Study Guide

Who received the Nobel Prize in 1953 for their work in describing the structure of DNA as a double helix?

• Rosalind Franklin and James Watson

• James Watson and Maurice Wilkins

• James Watson and Francis Crick

• Francis Crick and Maurice Wilkins

What is the structure of DNA described as?

• A single strand

• A triple helix

• A double helix

• A twisted square

According to the page, which scientist's contribution is implied to have been overlooked in the discovery of the DNA structure?

• Maurice Wilkins

• Linus Pauling

• Rosalind Franklin

• Erwin Chargaff

What does DNA stand for?

• Deoxyribonucleic acid

• Dioxynucleic acid

• Deoxynucleic acid

• Dioxoribonucleic acid

Where is DNA found in human cells?

• Only in the cell nucleus

• Only in mitochondria

• In both the cell nucleus and mitochondria

• Outside the cell

What is the function of DNA?

• It contains a genetic code for the production of lipids.

• It contains a genetic code for the production of carbohydrates.

• It contains a genetic code for the production of proteins.

• It contains a genetic code for the production of nucleic acids.

What does all DNA found in human cells constitute?

• The human cell

• The human organ

• The human body

• The human genome

What are the repeating units known as that compose DNA?

• Amino acids

• Nucleotides

• Polysaccharides

• Lipids

How many nitrogenous bases are there in DNA?

• Two

• Three

• Four

• Five

What is the reason for variation among people according to the text?

• The number of chromosomes

• The sequences of nitrogen bases in DNA

• The presence of identical twins

• The amount of DNA in cells