DNA structure and replication & mitosis and the cell cycle

A ___ is the basics building block of a nucleic acid

Nucleotide

the backbone of the DNA molecule is composed of a ___ and ____ sugar.

phosphate , deoxyribose

A nucleotide is composed of a sugar, phosphate and

Nitrogen Base

In the DNA molecules, the base ___ pairs with thymine and the base ___ pairs with cytosine

Adenine, Guanine

DNA replication is considered ___, as each new strand of DNA is composed of one new strand of nucleotides and one original strand of nucletioed

semi-conservative

In DNA replication, the enzyme ___ “unzips” the DNA double helix, ___ adds a molecule of RNA to the separated strands to indicate where replication should begin, and ___ adds new nucleotides to the separated strands

helicase, primase, DNA polymerase

cytosine, guanine, thymine, and adenine are referred to as phosphates

false

DNA is in the shape of a double helix

true

a nucleotide is made up of a sugar, phosphate and two nitrogen bases

False

replication is performed prior to cell division

true

adenine always pairs with guanine

false

complementary base pairing matches up complementary sugars

false

the sides of the DNA molecule are made up of repeating nitrogen bases and sugars

false

replication results in two strands of DNA, each of which has half of the original strand

true