structure of DNA
a nucleotide consists of...
a sugar, phosphate, and base
the rungs of DNA are made up of...
bases
what happens after the DNA unwinds?
RNA primer adds the primer
how many sister chromatids make up a chromosome
2
what percentage of the time do cells spend in interphase?
90%
the base pair rule states that
a=t
c=g
the structure of DNA is referred to...
a double helix
what happens after the primer is added?
the nucleotides are added
what happens during gap 1
cell matures/growth
true or false
cell growth occurs during mitosis
false
DNA is classified as...
nucleic acid
what are the names of the scientists who discovered DNA?
watson and crick
what side does DNA polymerase add the nucleotides?
the 3'
list the phases of mitosis in order
prophase, metaphase, anaphase, telophase
what are cells doing in interphase?
growing
copying DNA
doing their usual cellular function
the sugar found in DNA is
deoxyribose
what connects sugars to each other?
phosphates
what are the two DNA molecules called?
sister chromatids
in what phase do chromosomes line up in the middle of the cell?
metaphase
what is the name of the structure that attaches the sister chromatids together
centromere
DNA is a code for...
proteins
what holds nitrogen bases together?
hydrogen bonds
when must the primer be added to the lagging strand?
when there is a new break, everytime there is a new segment
what is present in only plant cells during the end of cytokinesis and telophase
cell plate
what are histones
the protein that DNA is wrapped around when it condenses into chromosomes