"A cell is like a(n)..."
raviole
highway
turtle
computer
clock
zoo
Wal-mart
school
family
paintball
mall
high-class club
jail
coconut
baseball
basketball
egg
traffic accident
balloon
airport
baby's crib
radio
cluttered room
radio station
lemon pie
refrigerator
orange
dog
bath tub
rhino
town
house
pocketbook
soda bottle
Ford Mustang GT
salad
pair of jeans
concert
dump
television
fish tank
Rocky's tank
enzyme
construction company
egg
city
swimming pool
power plant