What kind of molecule did most scientists in the early 1900s think carried genetic material?

• Nucleic acid

• protein

• carbohydrate

• lipid

What is the term that describes a unit made of a sugar, a phosphate group and a nitrogen-containing base?

• Adenine

• DNA

• Nucleic acid

• Nucleotide

What are the four bases of DNA?

• A,T,G,D

• A,T,G,C

• A,U,G,C

• A,U,G,D

What are Chargaff's rules?

• A= C, T = G

• A = T, C = G

• A = G, C = T

• All 4 bases are in equal amounts

One strand of DNA has the sequence of ATTGAT. What is the sequence of the other strand?

• TAACGA

• ATTGAT

• ACCTAG

• TAACTA

What does "semiconservative replication mean?

• Each new double helix contains two new strands.

• Each new double helix contains one original strand and one new strand

• Each new double helix contains two original strands

• One new double helix contains two original strands, and the other double

What is the goal of DNA replication?

• to make RNA

• to ensure that every cell has a complete set of identical DNA

• to make proteins

• to complete cell cycle

What is the function of DNA polymerase?

• to unzip DNA

• to bring new nucleotide's to the DNA

• to hold the strands apart so they can be copied

• to bond nucleotides together

What is the function of helicase?

• to unzip DNA

• to bring new nucleotides to DNA

• to hold the strands apart so they can be copied

• to bond nucleotides together

What is the function of ligase?

• to unzip DNA

• to bring new nucleotides to DNA

• to hold the strands apart so they can be copied

• to bond nucleotides together