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It’s Alive!!! Or Is It?
Science Test Notes
Chapter 2
7th Grade
 It
is not true that proteins are the main
source of energy for cells.
 Living
things carry out the chemical
activities of life by using energy.
 Nucleic
acids are not used by cells for
energy storage.
 All
living things grow during parts of
their lives.
 The
subunits of proteins are called
nucleotides.
 All
living things are composed of one or
more cells.
 The
human body is composed of about
70% water.
 When
a duck dives underwater, its inner
eyelids sense the water and cover the
duck’s eyes. To the eyelid, water is a
stimulus.
 The
molecule that provides most of the
energy for cellular processes is called
ATP.
 DNA
is not a stimulus that living things
sense and respond to.
 Potato plants store extra sugar as starch.
 DNA is a nucleic acid.
 Most
of the chemical reactions involved in
metabolism require water.
 All
organisms grow and develop.
 Sound
is not a basic need of most
organisms.
 All
organisms have cells that contain
DNA.
 Sexual
reproduction produces offspring
that share traits from both parents.
 The
smallest functional and structural
unit of life is the cell.
 The
maintenance of stable internal
conditions is called homeostasis.
 Organisms
carry out chemical activities of
life by using energy.
 DNA
 All
is a nucleic acid molecule.
organisms do not share the ability to
taste and smell.
 Gravity,
sound, and light are all stimuli
that living things can sense and respond
to.
 The
hydra reproduces through asexual
reproduction.
 The
major energy-carrying molecule in the
cell is ATP.
 Phospholipid
molecules form much of
the cell membrane.