The six elements that make up 99.9%
of all living things include
C, K, O, N, Ca and S
C, P, S, H, O and N
C, P, K, I, O and N
N, O, P, H, S and T
an
d
T
N
N,
O
,P
,H
,S
an
d
C,
P,
K
,I
,O
an
d
,H
,O
C,
P,
S
,O
,N
,C
aa
nd
N
S
25% 25% 25% 25%
C,
K
1.
2.
3.
4.
Which chemical elements would you
expect to find in abundance in a living cell?
1. hydrogen, neon,
argon
2. carbon, oxygen,
hydrogen
3. iron, magnesium,
calcium
4. sodium, potassium,
sulfur
What are the building blocks of protein
molecules?
Polymers
fatty acids
glucose molecules
amino acids
id
s
in
o
am
ec
ul
ol
m
co
se
glu
ac
es
s
ac
id
fa
tty
ol
y
m
er
s
25% 25% 25% 25%
1.
P
1.
2.
3.
4.
Fats are important energy storage
compounds because they:
bo
al
do
n'
t
re
qu
ir e
ni
tro
ge
n
d.
..
...
pe
at
d
liq
ui
ar
e
n
ta
i
co
n
no
rm
er
gy
m
or
e
en
ed
ia
m
im
de
ro
vi
2.
p
ea
di
ly
br
ea
kd
o
w
n
te
e.
..
to
...
20% 20% 20% 20% 20%
1.
r
1. readily breakdown to
form glucose
2. provide immediate
energy
3. contain more energy
per gram than
carbohydrates or
proteins
4. are liquid at normal
body temperatures
5. don't require nitrogen
Which of the following describes the
function of proteins?
1. energy formation
and storage
2. energy used in
muscles and
reaction
3. structural use and
enzyme formation
4. heredity and genetic
code carriers
ic
ge
ne
t
d
an
ity
ed
he
r
ct
ur
al
st
ru
co
..
zy
..
en
d
an
us
e
m
in
d
us
e
gy
en
er
en
er
gy
fo
rm
at
io
n
an
us
c le
d
s.
..
s. .
.
25% 25% 25% 25%
What is the most common food
storage compound in plants?
Ce
llu
20%
fa
t
20%
lo
se
20%
se
rc
h
20%
St
a
se
20%
Su
cr
o
Glucose
Starch
Sucrose
Cellulose
fat
Gl
uc
o
1.
2.
3.
4.
5.
The properties of water make it very valuable to living
systems. Which of the following statements
regarding water is not true?
1. it modifies temperature
extremes
2. it makes up about 50%
of your body
3. it is the greatest solvent
in the world
4. it expands slightly when
it freezes
5. it covers more than 75%
of the earth's surface
..
ha
n
et
or
er
sm
co
v
it
75
%
he
n
w
ht
ly
sli
g
nd
s
ex
pa
it
i..
.
..
ve
nt
ts
ol
at
es
gr
e
it
is
th
e
up
ak
es
m
it
it
m
od
i
fie
st
ab
em
ou
t
pe
r
at
ur
50
%
e.
..
o.
..
20% 20% 20% 20% 20%
Which of the following statements are
true of enzymes?
c..
n
sp
ee
d
up
do
w
su
all
y
yu
th
e
.
. ..
on
ce
s lo
w
se
d
yu
th
e
an
yc
su
all
y
on
l
yb
eu
ith
tw
ac
th
e
yw
ill
re
th
ey
a
re
lip
m
os
...
id
s
20% 20% 20% 20% 20%
th
e
1. they are lipids
2. they will react with
most body chemicals
3. they can only be used
once
4. they usually slow
down reactions and
prevent overheating
of the cells
5. they usually speed up
chemical reactions
n
sio
ad
he
n
at
io
po
r
Ev
a
cif
i
ch
ea
t
n
sp
e
te
ns
io
e
su
rfa
c
ca
p
ill
ar
y
ac
tio
n
Which characteristic of water allows it to
support the weight of objects more dense than
water?
1. capillary action
20% 20% 20% 20% 20%
2. surface tension
3. specific heat
4. Evaporation
5. adhesion
Water is polar in nature. To be polar
means to:
1. be very cold and
difficult to warm up.
2. freeze easily and
boil rapidly
3. have positive and
negative charged
ends
4. have a low heat
capacity
ne
an
d
ha
v
ea
ac
it y
lo
w
ve
he
at
ca
p
ga
t
i..
a.
..
os
iti
ep
ha
v
ze
fre
e
be
ve
ry
c
ol
d
ea
sil
y
an
d
an
d
di
bo
i
lr
ffi
cu
l..
.
25% 25% 25% 25%
Which one of the following is not an
organic molecule found in living
organisms?
m
ch
l
id
Lip
or
id
ra
t
e
e
20% 20% 20%
bo
hy
d
Ca
r
Nu
cle
ic
a
cid
in
20% 20%
So
di
u
Protein
Nucleic acid
Carbohydrate
Sodium chloride
Lipid
Pr
ot
e
1.
2.
3.
4.
5.
Which combination of particle and
charge is correct?
d
ch
a
ly
ive
n:
n
eg
at
eg
Pr
ot
o
n:
n
tro
Ne
u
rg
e
ch
...
at
ive
ly
yc
ha
el
:p
os
iti
v
ro
n
Ele
ct
n:
po
sit
i
ve
l
yc
ha
rg
e
d
rg
ed
25% 25% 25% 25%
Pr
ot
o
1. Proton:positively
charged
2. Electron:positively
charged
3. Neutron: negatively
charged
4. Proton: negatively
charged
Which of the following molecules is
made up of glycerol and fatty acids?
te
in
pr
o
s
ac
id
ic
20%
s
20%
Nu
cle
es
rc
h
St
a
20%
id
s
20%
Lip
20%
s
Sugars
Starches
Lipids
Nucleic acids
proteins
Su
ga
r
1.
2.
3.
4.
5.
An acidic solution could have a pH of
25%
25%
14
25%
3
25%
10
7
10
3
14
7
1.
2.
3.
4.
The three particles in an atom are
Pr
ot
o
ns
,
ne
on
s,
n
eu
tro
ns
,i
on
s
ut
ro
ns
Pr
ot
,e
ei
le
ns
ct
. ..
,l
ip
id
s,
ca
Iso
rb
to
oh
pe
y.
s,
..
el
ec
tro
ns
,n
eu
. ..
25% 25% 25% 25%
Pr
ot
r
1. Protrons, neutrons,
ions
2. Protons, neutrons,
electrons
3. Proteins, lipids,
carbohydrates
4. Isotopes, electrons,
neutrons
Which of the following is a positive
test for starch?
1. Benedicts solution
turns orange
2. Iodine turns yellow
3. Iodine turns black
4. Biuret turns violet
Be
ne
d
le
t
ck
ur
ns
v
io
sb
la
ur
n
Bi
ur
e
tt
et
Io
di
n
ur
n
et
Io
di
n
ict
ss
ol
ut
io
n
tu
r
sy
el
lo
n.
..
w
25% 25% 25% 25%
Which of the following is a positive
test for a simple sugar?
1. Sudan IV powder
dissolves coloring
the solution red
2. Biuret turns blue
3. Iodine turns black
4. Benedicts turns red
Su
da
n
ed
ck
Be
ne
d
ict
et
st
ur
n
ur
ns
r
sb
la
lu
e
ur
ns
b
ur
et
t
Bi
Io
di
n
IV
po
w
de
rd
is s
ol
...
25% 25% 25% 25%
When salt is dissolved in water, the
water is the
ve
n
t
25%
So
l
25%
ut
e
ut
io
n
25%
So
l
ac
ta
nt
25%
So
l
Reactant
Solution
Solute
Solvent
Re
1.
2.
3.
4.
A substance with a pH of 8 is
1. An acid
2. A base
3. Both an acid and a
base
4. neutral
a
an
d
id
ac
an
ne
ut
ra
ba
s
e
l
ba
se
A
Bo
th
An
ac
id
25% 25% 25% 25%
How much more acidic is a substance
with a pH of 4 compared to a
substance with a pH of 6?
tim
es
25%
10
00
es
25%
tim
tim
es
25%
20
tim
es
25%
10
0
10 times
20 times
100 times
1000 times
10
1.
2.
3.
4.
Which of the following is an example
of a catalyst?
An enzyme
Sodium Chloride
Water
Carbon Dioxide
xid
e
er
bo
n
Di
o
W
at
Ca
r
So
di
u
m
Ch
lo
r
id
e
en
zy
m
e
25% 25% 25% 25%
An
1.
2.
3.
4.