DNA Practice Quiz

What are the 3 components of a nucleotide?

• phosphate group

• sugar

• amino acid

• fatty acid

• nitrogenous base

In eukaryotes, DNA is stored in the

• Nucleus

• Ribosomes

• Cell Membrane

• Golgi Apparatus

DNA is a __________ stranded molecule.

• double

• single

• triple

The monomer or building block for a nucleic acid is a

• nucleotide

• amino acid

• fatty acid

• monosaccharide

What kind of bond is holding the nitrogen base pairs together in a DNA molecule?

• ionic bond

• polypeptide bond

• hydrogen bond

• covalent bond

If a DNA strand has 32 % guanine, what is the percentage of cytosine?

• 50%

• 32%

• 18%

• 64%

The sugar that is in the backbone of DNA is called

• fructose

• deoxyribose

• ribose

• glucose

What monomer is shown here?

• amino acid

• monosaccharide

• polypeptide

• nucleotide

The two strands making up the DNA double helix molecule

• contain ribose and deoxyribose in opposite strands.

• are held together by hydrogen bonds.

• are attached through a phosphate to hold the strands together.

• contain uracil but not thymine.

Which of the following units are repeatedly joined together to form a strand of DNA?

• amino acids

• nucleotides

• fatty acids

• polysaccharides