DNA Structure Quiz

Deoxyribonucleic acid is a large molecule that contains all the __________material for all living things.

DNA is found inside the cell ________.

DNA is shaped like a ____________ that is tightly coiled.

• ball of yarn

• twisted ladder

• pack of paper

• stack of pancakes

How many chromosomes does the average human have?

• 23

• 66

• 46

• 20

_________________ are made up of many tightly coiled strands of DNA

Sides of the double helix are made up of ____________ and deoxyribose.

Rungs of the double helix are made up of 4 nitrogenous bases.  Which one does not belong?

• quanine

• adenine

• thymine

• cytosine

The backbone is hydrophobic and the bases are hydrophilic

• true

• false

Right handed twist and asymmetric structure of the 4 bases create major and minor grooves.

• true

• false

Mutagens, radiation, and _____________ cause damage to DNA structure.

• oxidation

• photosynthesis

• metamorphosis

• chemicals