DNA structure

According to Chargaff's rule, if a DNA sample has 10% Adenine, How much Cytosine is in that same sample?

• 20

• 15

• 30

• 40

Base pairing rules state that ...

• Gunanine with Thymine, Adenine with Cytosine

• A with T, C with G

• A with C, G with T

• any combination will work

Molecules of DNA are composed of long chains of

• nucleotides

• RNA

• monosaccharides

• Adenine, thymine

The part of the molecule for which deoxyribonucleic acid is named is the

• nucleotide

• phosphate

• base

• Sugar

Which of the following is not part of a molecule of DNA?

• protein

• Deoxyribose sugar

• Nitrogenous base

• Phosphate

nucleotide consists of all of these EXCEPT

• hydrogen bonds

• sugar

• base

• phosphate

The scientists credited with establishing the structure of DNA are

• Sherlock Holmes and Watson

• Hershey and Chase.

• Avery and Chargaff

• Watson and Crick.

The shape of this molecule is 

• Pentagon

• Octagon

• single helix

• double helix

Two nitrogen bases in a DNA molecule are held together by

• Covalent

• Hydrogen bond

• stocks and bonds

• Bond, James Bond

The strongest bonds in a DNA molecule are

• covalent

• ionic

• hydrogen

• love