DNA Structure and Replication

This scientist used heat and found it denatures proteins while DNA is heat stable. (mice experiment)

• Chargaff

• Griffith

• Watson & Crick

• Hershey & Chase

What is DNA made up of?

• nucleotides

• cytoplasm

• RNA

• cells

What makes up the SIDES of a DNA ladder? (backbone)

• nitrogen bases

• Deoxyribose sugars & phosphates

• genes & chromosomes

• RNA

What makes up the rungs (center) of a DNA ladder?

• sugars & phosphates

• nitrogen bases

• sugars

• genes & chromosomes

Studied bacteriophages - phages are composed of protein and DNA. Determined DNA enters the host cell based upon tracers.

• Chargaff

• Hershey & Chase

• Watson & Crick

• Avery, McCarty and Macleod

DNA is located in the _____ in eukaryotic cells.

• nucleus

• cytoplasm

• mitochondria

• ribosome

Eukaryotic cells (plants & animals) have

• one origin of replication site

• have many origin of replication sites

According to the Base pair rule, if a DNA molecule contains 1500 adenines how many thymine's will it contain?

• 1500

• 500

• 0

• 1000

DNA Replication is considered "semi-conservative" because

• both original DNA strands are a part of one new DNA strand

• one strand of original DNA is on the new DNA strand

Step 2 of Replication: Primase...

• unzips DNA

• lays down primer; tells polymerase where to start adding nucleotides

• adds nucleotides

• glues okazaki fragments