Ch. 12 DNA

Hershey and Chase's experiment led to what hypothesis?

• DNA was genetic material found in all living cells

• DNA is only found bacterial cells

• DNA is only found in sex cells

• Protein transmits genetic information from one generation to the next

Why is it important that DNA can be accurately copied?

• it is not important

• so it keeps it molecular structure

• so that each daughter cell receives a complete and correct copy of the genetic material

• so that we are all identical in genetic makeup

What is DNA?

• The universal code for life

• information passed from generation to generation

• A carbohydrate strand

• a strand that does not code for genetic mat

The sugar in DNA is called..

• fatty acids

• deoxyribose

• nucleotides

• covalent bonds

The percentage of adenine in DNA is equal to 45%, what is the percent of cytosine in the same DNA?

• 45

• 10

• 5

• 0

The person credited with coming up with the base pairing rules...

• Erwin Chargaff

• Rosalind Franklin

• Watson and Crick

• Oswald Avery

What is the structure of DNA?

• a circle

• a linear strand

• a helix

• it is random and has no shape

Which parts of the DNA molecule correspond to the rungs of the ladder?

• nitrogenous base pairs

• the phosphate group

• 5-carbon sugar deoxyribose

• proteins

What type of bond holds the nitrogenous bases together?

• Carbon bonds

• Nitrogen bases stick together

• Hydrogen bonds

• Sodium ion bonds 

The building blocks or monomers of DNA are...

• nucleotides

• amino acids

• base pairs

• A, T, C, & G