These are the most frequently used words in this book.
across
ageing
animals
another
apoptosis
atp
bacteria
bacterial
between
body
case
cell
chain
change
complex
complexity
death
depends
difference
different
diseases
dna
does
down
electrons
energy
eukaryotes
eukaryotic
even
evolution
example
few
first
form
free
generate
genes
genetic
genome
groups
host
human
individual
known
large
larger
least
less
levels
life
little
live
mammals
may
means
membrane
metabolic
might
mitochondria
mitochondrial
muscle
must
mutations
natural
need
new
now
nucleus
number
own
oxygen
part
per
perhaps
population
possible
power
proteins
proton
radicals
rate
rather
respiration
respiratory
see
seems
selection
sequence
sex
should
similar
single
size
species
still
take
time
two
work
years