DNA
and
RNA
are
composed
of
phosphate
,
a
pentose
sugar
(
____________________
for
RNA
,
and
____________________
for
DNA
)
,
and
a
nitrogenous
base
.
Purines
:
____________________
and
____________________
(
pure
as
gold
/
all
girls
are
pure
)
.
Pyrimidines
:
____________________
,
____________________
and
____________________
(
King
TUC
)
Nucleosides
=
Pentose
sugar
+
nitrogenous
base
Nucleotides
=
pentose
sugar
+
nitrogenous
base
+
phosphate
.
DNA
:
purines
-
adenine
and
guanine
pyrimidines
=
cytosine
and
thymine
(
Uracil
is
____________________
ONLY
)
The
base
pairing
in
DNA
is
:
____________________
+
thymine
(
____________________
-
T
)
dna
AT
the
spot
all
-
-
-
-
tall
guanine
+
____________________
(
G
-
____________________
)
good
cats
pair
up
guys
-
-
-
-
can
DUNK
RNA
:
____________________
replaces
thymine
.
RNA
is
____________________
stranded
so
there
is
no
base
pairing
of
strands
,
but
base
pairing
occurs
with
tRNA
during
protein
synthesis
Replication
:
(
DNA
-
-
DNA
)
In
____________________
46
-
-
-
}
92
chromosomes
Replication
occurs
during
the
____________________
phase
of
the
cell
cycle
.
____________________
unwinds
DNA
strand
DNA
____________________
makes
new
strand
from
old
strand
template
It
proceeds
in
the
____________________
-
____________________
direction
.
five
comes
before
three
Mitosis
then
splits
cell
nucleus
so
96
chromosomes
become
two
46
chromosome
nucleii
Transcription
:
(
DNA
-
>
____________________
)
In
nucleolus
DNA
is
transcribed
to
a
molecule
of
____________________
RNA
(
mRNA
)
.
RNA
Polymerase
binds
to
____________________
Site
(
usually
____________________
)
to
begin
Transcription
always
proceeds
in
the
5'~>3'
direction
.
Continues
until
it
reaches
a
____________________
Site
(
Ususally
uaa
,
uag
,
uga
)
.
mRNA
then
leaves
the
____________________
and
enters
the
____________________
.
mRNA
is
single
stranded
,
contains
ribose
as
the
pentose
sugar
,
and
has
____________________
)
in
place
of
thymine
.
Every
three
bases
in
the
mRNA
is
called
a
____________________
.
A
codon
encodes
for
a
single
amino
acid
which
it
delivered
attached
to
tRNA
with
the
corresponding
anti
-
codon
that
matches
the
three
nucleotide
sequence
on
the
mRNA
Translation
:
(
mRNA
-
>
____________________
)
Translation
occurs
on
the
____________________
____________________
____________________
(
RER
)
.
Translation
involves
mRNA
,
transfer
RNA
(
tRNA
)
and
ribosomes
.
The
ribosomes
surround
the
mRNA
and
expose
2
____________________
at
a
time
.
The
codon
of
the
mRNA
is
recognized
by
the
anticodon
present
on
____________________
molecule
.
The
tRNA
molecules
are
also
bound
to
a
specific
amino
acid
,
attached
by
amino
acyl
t
-
rna
enzyme
The
enzyme
____________________
____________________
links
two
amino
acids
together
,
using
____________________
for
energy
and
begins
the
synthesis
of
a
polypeptide
chain
(
a
protein
)
.
