Structure of DNA

True or False: In DNA, purines only bond with purines

• True

• False

True or False: Guanine always pairs with Cytosine

• True

• False

What is the name of the 5-carbon sugar in DNA?

• Glucose

• Ribose

• Deoxyribose

• Sucrose

What term did James Watson and Francis Crick use to describe the shape of DNA?

• Branching chain

• Straight chain

• Single strand

• Double helix

If an organism's DNA has 27% thymine, how much adenine will they have?

• 23%

• 46%

• 27%

• How should I know?

Which of the following is NOT a part of DNA?

• Deoxyribose

• Phosphate

• Acidic nucleus

• Nitrogenous base

If an organism has 35% cytosine in it's DNA, how much adenine will it have?

• 35%

• 25%

• 30%

• 15%

Which scientist did NOT contribute to the discovery of the structure of DNA?

• Neville Longbottom

• Francis Crick

• Rosalind Franklin

• James Watson

If DNA is replicating and has an adenine on one strand, what nitrogenous base will it use to pair with it?

• Adenine

• Thymine

• Guanine

• Cytosine

If an organism's DNA has 13% cytosine, how much thymine will it have?

• 37%

• 25%

• 26%

• 13%