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bases

Bases in chemistry are substances that participate in reactions by accepting protons or donating electron pairs. The Arrhenius definition characterizes bases as compounds that increase hydroxide ion concentration in water, while the Bronsted-Lowry definition treats bases as proton acceptors. Common bases include hydroxides (such as sodium hydroxide), ammonia, and carbonates. Bases typically have a pH above 7, feel slippery, and react with acids in neutralization reactions to form salts and water. Strength varies: strong bases dissociate completely in solution, whereas weak bases do not.

Mathematics and computer science use the term base in different senses. A numeral base, or radix, defines

In genetics, nucleotide bases in DNA are adenine, cytosine, guanine, and thymine; RNA uses adenine, cytosine,

In sports, bases are the four markers on a baseball diamond that runners must touch to score.

how
numbers
are
represented,
with
base-10
and
base-2
as
familiar
examples.
Digits
range
from
0
to
base-1,
and
a
digit's
position
determines
its
weight
in
powers
of
the
base.
In
linear
algebra,
a
basis
of
a
vector
space
is
a
set
of
vectors
that
are
linearly
independent
and
span
the
space;
every
vector
can
be
uniquely
expressed
as
a
linear
combination
of
basis
vectors.
The
size
of
a
basis
equals
the
space's
dimension.
guanine,
and
uracil.
Bases
pair
across
the
double
helix:
A
pairs
with
T
(or
U
in
RNA)
and
C
pairs
with
G,
stabilized
by
hydrogen
bonds.
The
sequence
of
bases
encodes
genetic
information
and
directs
cellular
processes.
The
order
is
first
base,
second
base,
third
base,
and
home
plate.
A
team
advances
runners
on
hits,
walks,
and
other
plays,
while
defensive
teams
try
to
prevent
advancement
and
tag
runners
out.