TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 105
SCIENCE
Page 105
TAKS Gr10 ELA/M/SS/Sci Rel '03
Page 106
4/8/03
9:48 AM
Page 106
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 107
FORMULA CHART
for Grade 10 Science Assessment
D=
Q = (m)(∆T)(Cp )
p = mv
Force = mass × acceleration
F = ma
Work = force × distance
W = Fd
4
Momentum = mass × velocity
3
d
t
v − vi
a= f
∆t
s=
2
distance
time
final velocity − initial velocity
Acceleration =
change in time
Speed =
1
gained or
mass in
change in
specific
=
( heat
lost by water ) ( grams )( temperature )( heat )
m
v
0
mass
volume
Centimeters
Density =
5
6
work
time
W
t
WO
% =
× 100
WI
P=
7
Power =
KE =
Gravitational potential energy = mass × acceleration due to gravity × height
GPE = mgh
10
Energy = mass × (speed of light) 2
E = mc 2
11
Velocity of a wave = frequency × wavelength
v = fλ
12
V
R
13
voltage
resistance
I=
9
Current =
mv 2
2
8
work output
× 100
work input
1
Kinetic energy = 2 (mass × velocity 2)
% efficiency =
Electrical power = voltage × current
P = VI
14
Electrical energy = power × time
E = Pt
15
16
Constants/Conversions
18
c = speed of light = 3 × 10 8 m/s
17
g = acceleration due to gravity = 9.8 m/s 2
speed of sound = 343 m/s at 20°C
19
1 cm 3 = 1 mL
1 wave/second = 1 hertz (Hz)
20
1 calorie (cal) = 4.18 joules
1000 calories (cal) = 1 Calorie (Cal) = 1 kilocalorie (kcal)
newton (N) = kgm/s 2
joule (J) = Nm
watt (W) = J/s = Nm/s
Page 107
volt (V)
ampere (A)
ohm (Ω)
Page 108
7
6
5
Ti
47.88
Sc
44.956
Scandium
39
Y
88.906
20
Ca
40.08
Calcium
38
Sr
19
K
39.098
Potassium
37
Rb
Ac
227.028
56
Ba
137.33
Barium
88
Ra
226.025
Radium
55
Cs
132.905
Cesium
87
Fr
(223)
Francium
91.224
(261)
Rf
104
Hafnium
178.49
Hf
72
Zirconium
Rutherfordium
Actinide Series
Lanthanide Series
Actinium
89
Lanthanum
138.906
La
57
Yttrium
87.62
Strontium
85.468
Rubidium
Zr
40
Titanium
22
Magnesium
Sodium
21
Mg
24.305
Na
12
11
22.990
9.012
Beryllium
6.941
Lithium
6
VIB
7
VIIB
8
9
VIII
10
11
IB
12
IIB
(98)
Tc
43
Manganese
54.938
Mn
25
144.24
(145)
Pm
61
Hassium
(265)
Hs
108
Osmium
190.23
Os
76
Ruthenium
101.07
Ru
44
Iron
55.847
Fe
26
91
Pa
231.036
Protactinium
90
Th
232.038
Thorium
Uranium
238.029
U
92
Neptunium
237.048
Np
93
Praseodymium Neodymium Promethium
140.908
Cerium
140.12
Nd
60
59
Pr
58
Ce
Bohrium
(263)
Seaborgium
(262)
Bh
107
Rhenium
186.207
Re
75
(262)
Sg
106
Tungsten
183.84
W
74
Molybdenum Technetium
95.94
Mo
42
Chromium
51.996
Cr
24
Dubnium
Db
105
Tantalum
180.948
Ta
73
Niobium
92.906
Nb
41
Vanadium
50.942
V
23
Plutonium
(244)
Pu
94
Samarium
150.36
Sm
62
Meitnerium
(266)
Mt
109
Iridium
192.22
Ir
77
Rhodium
102.906
Rh
45
Cobalt
58.933
Co
27
Americium
(243)
Am
95
Europium
151.97
Eu
63
(269)
110
Platinum
195.08
Pt
78
Palladium
106.42
Pd
46
Nickel
58.69
Ni
28
69.72
48
Mercury
200.59
Hg
80
Cadmium
112.41
Cd
Thallium
204.383
Tl
81
Indium
114.82
In
49
Gallium
65.39
Zinc
Ga
31
Aluminum
Zn
30
Lead
207.2
Pb
82
Tin
118.71
Sn
50
Germanium
72.61
Ge
32
Silicon
28.086
Si
14
Carbon
12.011
Curium
(247)
Cm
96
Gadolinium
157.25
Gd
64
Berkelium
(247)
Bk
97
Terbium
158.925
Tb
65
Californium
(251)
Cf
98
Dysprosium
162.50
Dy
66
Einsteinium
(252)
Es
99
Holmium
164.930
Ho
67
Mass numbers in parentheses are those of
the most stable or most common isotope.
Gold
196.967
Au
79
Silver
107.868
Ag
47
Copper
63.546
Cu
29
26.982
Al
13
Boron
C
6
14
IVA
30.974
P
15
Nitrogen
14.007
N
7
15
VA
Fermium
(257)
Fm
100
Erbium
167.26
Er
68
Bismuth
208.980
Bi
83
Antimony
121.763
Sb
51
Arsenic
74.922
As
33
Phosphorus
Name
Nobelium
(259)
No
102
Ytterbium
173.04
Yb
70
Astatine
(210)
At
85
Iodine
126.904
I
53
Bromine
79.904
Br
35
Chlorine
35.453
Cl
17
Fluorine
18.998
F
9
17
VIIA
Lawrencium
(262)
Lr
103
Lutetium
174.967
Lu
71
Radon
(222)
Rn
86
Xenon
131.29
Xe
54
Krypton
83.80
Kr
36
Argon
39.948
Ar
18
Neon
20.179
Ne
10
Helium
4.0026
Revised October 15, 2001
Mendelevium
(258)
Md
101
Thulium
168.934
Tm
69
Polonium
(209)
Po
84
Tellurium
127.60
Te
52
Selenium
78.96
Se
34
Sulfur
32.066
S
16
Oxygen
15.999
O
8
16
VIA
He
2
18
VIIIA
9:48 AM
4
5
VB
10.81
4
IVB
B
Be
Li
5
4
13
IIIA
3
1.008
2
IIA
3
IIIB
Atomic mass
Hydrogen
H
Si
28.086
Symbol
Silicon
14
Atomic number
4/8/03
3
2
1
1
Group
1
IA
Periodic Table of the Elements
TAKS Gr10 ELA/M/SS/Sci Rel '03
Page 108
TAKS Gr10 ELA/M/SS/Sci Rel '03
Page 109
4/8/03
9:48 AM
Page 109
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 110
DIRECTIONS
Read each question and choose the best answer. Then fill in the correct answer on your answer
document.
SAMPLE A
When a 10% hydrochloric acid solution is
heated in an open test tube, the test tube
should always be pointed —
A
so bubbles are visible
B
at a 180° angle from the flame
C
toward a ventilated area
D* away from nearby people
10/11 Science Sample A
Page 110
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 111
SAMPLE B
Mass = 40 g
Volume = 20 mL
The picture shows a cube that contains 20 mL of a solution. The solution has a mass of 40 grams. What is
the density in g/mL of this solution? Record and bubble in your answer on the answer document.
Correct Answer:
2
10/11 Science Sample B
Page 111
TAKS Gr10 ELA/M/SS/Sci Rel '03
1
4/8/03
9:48 AM
Page 112
Dogs (Canis familiaris) are most closely
related genetically to which of the following
organisms?
A
African hunting dog (Lycaon pictus)
B* Gray wolf (Canis lupus)
C
Grizzly bear (Ursus arctos)
D
Domestic cat (Felis catus)
2
The primary way liquids and gases transmit
heat is by the process of —
F
reflection
G
conduction
H
radiation
J* convection
10EN05I06BZ01729
10EN02B06DZ01736
Page 112
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 113
Fossil Layers
Youngest
Fish skeleton
Shell
Fern frond
Leaf from
hardwood tree
Oldest
3
During a severe drought a dry lake was explored for fossils. The diagram represents the fossils
uncovered and the layers they were in. According to this information, this area was once a —
A* forest that was replaced by a freshwater lake
B
freshwater lake that was replaced by a desert
C
saltwater sea that was replaced by a forest
D
freshwater lake that was replaced by a forest
10EN01B02CZ01225
4
A laboratory investigation included examining
prepared slides of pond water. Single-celled
organisms with a nucleus and either cilia or
flagella were visible. These organisms
probably belong to the kingdom —
F
Animalia
G
Fungi
H
Plantae
J* Protista
10EN02B08CZ01197
Page 113
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 114
7
–
A
–
+
+
+
–
Which of the following shows the length of a
rubber strip measured precisely to
2.22 centimeters?
B
+
C
–
D*
5
The picture shows a model of the element —
10EN01B02BZ01285
A
fluorine
B
helium
C* beryllium
D
oxygen
10EN04I07EZ01603
6
Which of these is a hypothesis that can be
tested through experimentation?
F* Bacterial growth increases exponentially
as temperature increases.
G
A fish’s ability to taste food is affected by
the clarity of aquarium water.
H
Tadpoles’ fear of carnivorous insect larvae
increases as the tadpoles age.
J
The number of times a dog wags its tail
indicates how content the dog is.
8
How much force is needed to accelerate a
1,300 kg car at a rate of 1.5 m/s 2?
F
867 N
G* 1,950 N
H
8,493 N
J
16,562 N
10EN05I04AZ01775
10EN01B02AZ01389
Page 114
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 115
Use the information below and your knowledge of science to answer questions 9–11.
Photosynthesis
light
energy
6CO2 + 6H2O → C6H12O6 + 6O2
Respiration
C6H12O6 + 6O2 → energy + 6CO2 + 6H2O
The first equation represents photosynthesis. Plants use energy from sunlight to produce sugar and
oxygen from carbon dioxide and water. The second equation represents aerobic respiration. Plants and
animals release stored energy in a reaction between sugar molecules and oxygen. This reaction produces
carbon dioxide and water.
10EN0103
9
Oxygen (O2 ) is an example of —
A
Cross Section of a Leaf
an alloy
B* a molecule
C
a salt
D
a mixture
S
10EN04I07EZ01166-0103
R
Q
10
T
To produce 4 molecules of sugar, a plant
needs —
F
6 molecules of hydrogen
G
12 molecules of ATP
H
18 molecules of water
J* 24 molecules of carbon dioxide
10EN04I08CZ01165-0103
11
Which structure regulates gas exchange
during the processes of photosynthesis and
respiration?
A
Q
B
R
C
S
D* T
10EN03B13AZ01164-0103
Page 115
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 116
Most Abundant Elements
at Earth’s Surface
Element
12
Toy Car Speed
Percent by
Mass
Oxygen
46.6
Silicon
27.7
Aluminum
8.13
Iron
5.00
Calcium
3.63
Which conclusion is best supported by these
data?
13
Trial
Time
(s)
1
5
2
7
3
4
4
7
The table shows times required for the same
toy car to travel 10 m across an identical
section of a floor after it is pushed. The
difference in times was probably caused by
differences in —
F
Earth’s surface is composed mostly of
silicon and calcium.
A* force exerted
G
Oxygen is closer to Earth’s surface than
aluminum.
B
surface friction
C
air resistance
D
car mass
H* There is more aluminum than calcium at
Earth’s surface.
J
Silicon is much heavier than iron at
Earth’s surface.
10EN05I04BZ01158
10EN01B02DZ01426
Page 116
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 117
Osmosis Apparatus
A
Tubing
B
Glass tube
10 mL distilled water
10 mL of 5% starch solution
14
Dialysis membrane
Which would most likely cause the liquid in Tube A to rise?
F
Starch concentrations being equal on each side of the membrane
G* Water passing from a region of lower starch concentration to one of higher starch concentration
H
Water and starch volumes being the same
J
Solute in the tubes changing from a higher temperature to a lower temperature
10EN02B04BZ01759
Page 117
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
15
4/8/03
9:48 AM
Page 118
The reason for wafting or fanning a small
amount of chemical vapors toward the nose as
a means to detect odors in a test tube is to —
A
avoid experimental error from excessive
loss of mass of reactants or products
B
avoid splashing chemicals into the face of
any person
1
2
3
C* protect the respiratory tract against
potentially harmful vapors
D
determine the relative strength of the
odor before smelling directly
10EN01B01AZ01386
4
17
16
Pain medications can be made as powders or
tablets. The powders tend to work faster than
tablets with the same ingredients because
powder —
Which structure in the upper arm is
responsible for raising the lower arm?
A
1
B
2
C* 3
D
4
10EN02B10AZ01313
F* dissolves faster in solution than a single
tablet
G
has more total mass than a single tablet
H
travels through the bloodstream more
easily than a tablet
J
is easier to swallow than tablets
10EN01I03BZ01440
Page 118
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
18
4/8/03
9:48 AM
Page 119
All of the following symptoms are likely
associated with bacterial infection except —
F
skin rashes or lesions
G
elevated body temperature
H
swollen glands or tissues
J* increased red blood cell count
20
A car traveled 150 km in 2.5 hours. What was
its average speed in km per hour? Record and
bubble in your answer on the answer
document.
Correct Answer:
60
10EN05I04AZ01811-0151
10EN03B04DZ01704
19
This seed is best dispersed by —
A
water
B
birds
C* wind
D
insects
10EN03B13AZ01156
Page 119
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
21
4/8/03
9:48 AM
Page 120
Which of the following will allow
measurement of a liquid’s volume with
the greatest precision?
A
50 mL cylinder graduated in 1 mL
increments
B* 100 mL cylinder graduated in 0.5 mL
increments
C
100 mL cylinder graduated in 1 mL
increments
D
200 mL cylinder graduated in 5 mL
increments
10EN01B02BZ01403
Page 120
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
Page 121
1
2
3
6
7
8
13
14
19
22
9:48 AM
4
9
10
15
20
11
16
21
5
22
12
17
18
X Y
23
The diagram represents the chromosomes of a person with a genetic disorder caused by nondisjunction,
in which the chromosomes fail to separate properly. Which chromosome set displays nondisjunction?
F
2
G
8
H* 21
J
23
10EN02B06CZ01307
23
Which organism lives in the human intestine
and aids in the digestive process?
25
The medulla, part of the brain stem, reacts
quickly to increased levels of CO2 in the blood
and stimulates a response from the —
A* The bacterium Escherichia coli
B
The fungus Trichophyton rubrum
C
The protozoan Entamoeba coli
D
The algae Fucus vesiculosus
A
excretory system
B
immune system
C* respiratory system
D
integumentary system
10EN03B04DZ01703
10EN02B10AZ01176
24
Which of the following is most likely to cause
increases in a predator population?
F
Fewer prey
G* A reduction in competition
H
More parasites
J
A period of drought
10EN03B07BZ01308
Page 121
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 122
Codon Chart
Second Position
U
U
C
First Position
(5′)
A
G
Phenylalanine
Phenylalanine
Leucine
Leucine
Leucine
Leucine
Leucine
Leucine
Isoleucine
Isoleucine
Isoleucine
Methionine
Valine
Valine
Valine
Valine
5′
26
C
Serine
Serine
Serine
Serine
Proline
Proline
Proline
Proline
Threonine
Threonine
Threonine
Threonine
Alanine
Alanine
Alanine
Alanine
A
Tyrosine
Tyrosine
Stop
Stop
Histidine
Histidine
Glutamine
Glutamine
Asparagine
Asparagine
Lysine
Lysine
Aspartic acid
Aspartic acid
Glutamic acid
Glutamic acid
G
Cysteine
Cysteine
Stop
Tryptophan
Arginine
Arginine
Arginine
Arginine
Serine
Serine
Arginine
Arginine
Glycine
Glycine
Glycine
Glycine
U
C
A
G
U
C
A
G Third Position
(3′)
U
C
A
G
U
C
A
G
AGAUCGAGU 3′ → 5′ ACAUCGAGU 3′
The chain above represents three codons. Which of the following changes would be expected in the
amino acid chain if the mutation shown above occurred?
F
The amino acid sequence would be shorter than expected.
G* The identity of one amino acid would change.
H
The amino acid sequence would remain unchanged.
J
The identities of more than one amino acid would change.
10EN02B06CZ01228
27
Energy conversion within an animal cell
would be severely limited by removal of the
cell’s —
A* mitochondria
B
chloroplasts
C
plastids
D
lysosomes
10EN02B04BZ01255
Page 122
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
28
4/8/03
9:48 AM
Page 123
Ten different types of culture media were inoculated with the same strain of bacteria and incubated at
the same temperature. Nine of the cultures grew. Which of these conclusions can be drawn from this
information?
F
The media used in the experiment are all capable of sustaining bacterial growth.
G
The temperature varied greatly during the experiment.
H
Only the culture that failed to grow bacteria was inoculated properly.
J* One of the media lacked the nutrients needed for the bacteria to grow.
10EN01B02DZ01392
Page 123
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 124
Hawks
Ten frogs were placed in a large container
with three sections. Each section had equal
amounts of light, shelter, food, and water.
Each section was painted a different color: red,
green, or blue. Daily observations were made
of the frogs’ locations for six weeks. These data
were compiled to produce the following frog
location frequencies.
Weasels
Raccoons
Mice
Red area = 31%
Green area = 35%
Grass/
shrubs
Blue area = 34%
ue
Which organisms in this food web can be
described as both primary and secondary
consumers?
F
Hawks
G
Weasels
H* Raccoons
Bl
ee
n
Gr
Re
d
30
J
Mice
10EN03B12EZ01315
29
Which conclusion about the frogs is supported
by these data?
A
Four frogs out of ten preferred the green
area.
B* The frogs randomly moved into the
colored areas.
C
Most frogs tended to avoid the red area.
D
Most frogs preferred the color blue.
10EN01B02DZ01416
31
What is the density at 20°C of 12.0 milliliters
of a liquid that has a mass of 4.05 grams?
A* 0.338 g/mL
B
2.96 g/mL
C
16.1 g/mL
D
48.6 g/mL
10EN04I07AZ01707
Page 124
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 125
R
T
S
Q
32
Which switch, if opened, will cause the lightbulb to stop glowing?
F* Q
G
R
H
S
J
T
10EN05I06FZ01116
In Central America there is a tree called
bullhorn acacia (Acacia cornigera) that
provides both food and shelter to a certain
species of ant (Pseudomyrmex ferruginea). The
ants live within the tree without causing it
harm. In fact, the ants protect the tree by
vigorously attacking and stinging other
animals that try to eat it.
34
The owner of a pet store assures a customer
that if she buys only one female hamster, she
will not need to worry about the hamster
having offspring, because there will be no
male with which the female can breed. What
possibility is the pet-store owner overlooking?
F
The hamster could be infertile.
G
The sex of the hamster could change.
H* The hamster could be pregnant.
J
33
The hamster could be a twin.
This relationship is an example of —
10EN01I03BZ01437
A
predation
B
parasitism
C* mutualism
D
commensalism
10EN03B12BZ01247
Page 125
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
35
4/8/03
9:48 AM
Page 126
Which of the following pieces of equipment
would be most appropriate for measuring the
volume of a marble?
36
100
mL
In the rock cycle, which of these is a chemical
change involved with the formation of igneous
rocks?
F
Compression of sediments
G
Heat loss from lava
H
Subduction of plates
J* Formation of minerals
A
10EN04I08AZ01766
mL
100
90
80
70
B*
60
50
37
40
30
20
10
Multicellular eukaryotes that are usually
mobile and obtain food from other organisms
probably belong to the kingdom —
A
Plantae
B
Fungi
C* Animalia
C
g
D
Protista
10EN02B08CZ01198
9
10
8
7
6
D
5
4
3
0
1
2
cm
10EN01B02AZ01373
38
At 0°C sound travels through air at a speed of
330 m/s. If a sound wave is produced with a
wavelength of 0.10 m, what is the wave’s
frequency?
F
0.0033 Hz
G
33 Hz
H
330 Hz
J* 3300 Hz
10EN05I05AZ01105
Page 126
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 127
Common Food Web
Wolves
Foxes
Rabbits
Hawks
Owls
Snakes
Frogs
Mice
Grasshoppers
Berries
39
Grass
Grain
Wolves and hawks are at the same trophic level because they —
A
both live on land
B
are both large mammals
C* both eat primary consumers
D
have similar hunting patterns
10EN03B12EZ01209
Page 127
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 128
School
15 km/9 min
12 km/8 min
S
R
Store
Gym
T
Q
11 km/15 min
14 km/12 min
Home
40
The diagram represents the total travel of a teacher on a Saturday. Which part of the trip is made at
the greatest average speed?
F
Q
G
R
H* S
J
T
10EN05I04AZ01355
41
What characteristic of water remains the
same no matter what is dissolved in it?
42
Which of these characteristics might help a
plant species survive in an area with limited
sunlight?
A* The ratio of hydrogen to oxygen
B
The ability to refract light
C
The hydroxide ion concentration
D
The freezing temperature
F
Bright flowers
G* Large leaves
H
Short stems
J
Thick cuticles
10EN04I09AZ01716
10EN03B13AZ01309
Page 128
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 129
5000 kcal available in
tissues of plant
Consumption 1000 kcal
100 kcal incorporated
into tissues of herbivore
Consumption 30 kcal
3 kcal incorporated
into tissues of carnivore
43
Approximately how much of the energy available in the tissues of the producer is eventually
incorporated into the tissues of a secondary consumer?
A* Less than 1%
B
Between 20% and 30%
C
Approximately 50%
D
More than 50%
10EN03B12EZ01248
Page 129
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
44
4/8/03
9:48 AM
Page 130
In an investigation 10,000 dung beetles were
examined for the presence of parasites. The
data showed that about 5% of the beetles had
parasites. The results are —
46
What is the current in a copper wire that
has a resistance of 2 ohms and is connected
to a 9-volt electrical source?
F
F
invalid because only dung beetles were
examined
G
unsupported because the parasite
population was small
H
erroneous because more beetles should
have had parasites
0.22 amp
G* 4.5 amps
H
11.0 amps
J
18.0 amps
10EN05I06FZ01756
J* valid because the sample size was
sufficient for accuracy
10EN01B02DZ01418
PbO2 →
45
PbO +
O2
What are the coefficients that will balance
this chemical equation?
47
Certain chemicals in the diet of moth larvae
seem to influence the early development of the
moths’ wings. Careful observation of
developing pupae could result in —
A* data to verify the hypothesis
A
2, 1, 1
B
changes to the conclusion
B
3, 4, 2
C
a conclusion about the moths’ eggs
C* 2, 2, 1
D
development of a new moth species
D
4, 3, 2
10EN01I03AZ01429
10EN04I08CZ01777
Page 130
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
48
4/8/03
9:48 AM
Page 131
Which system is responsible for producing
enzymes that aid in breaking down substances
to be absorbed for the body’s growth and
repair?
Hemoglobin Saturation vs.
Partial Pressure of Oxygen
100
F* Digestive system
90
Reproductive system
80
H
Respiratory system
70
J
Skeletal system
10EN02B10AZ01177
Saturation
(%)
G
60
50
40
30
20
10
1
2
3
4
5
6
7
8
9 10
Partial Pressure of O2
(kPa)
49
According to the graph, about how much
hemoglobin would be saturated at an O2
pressure of 7.3 kPa?
A
32%
B
67%
C* 89%
D
92%
10EN01B02CZ01288
Page 131
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 132
Solubility Rules
1. All sodium, potassium, and ammonium salts are soluble.
2. All silver, lead, and mercury salts are insoluble.
3. All carbonates, sulfides, and hydroxides are insoluble.
4. All sulfates are soluble except calcium sulfate and barium sulfate.
50
Which of the following salts has the greatest solubility in water at 25°C?
F
CaCO3
G
FeS
H
HgCl2
J* KClO4
10EN04I09DZ01769
Plants → Aphids → Spiders → Sparrows
51
In this food chain, the spiders are —
A
producers
B
primary consumers
C
competitors
D* secondary consumers
10EN03B12EZ01241
Page 132
GO ON
TAKS Gr10 ELA/M/SS/Sci Rel '03
52
4/8/03
9:48 AM
Page 133
Objects of the same mass but of different sizes
and shapes were dropped from a given height.
Their rates of free fall were measured and
recorded. Which of the following is most likely
the question this experiment was designed to
answer?
F
How does height affect the force of
gravity?
G
How does gravity affect objects of different
densities?
H
How do mass and weight affect falling
objects?
54
As temperature drops to the dew point, clouds
form in the atmosphere, and dew forms on
ground surfaces. A scientist proposes that
adding more water molecules to the
atmosphere will change the dew point. This
proposal is —
F
an invalid observation
G* a valid hypothesis
H
an invalid problem
J
a valid conclusion
10EN01I03AZ01423
J* How do size and shape affect an object’s
rate of free fall?
10EN01B02AZ01391
55
Bird Traits
Gene
Trait
G
Green feathers (dominant)
g
Yellow feathers (recessive)
L
Long beak (dominant)
l
Short beak (recessive)
GGLl (male) × Ggll (female)
Laboratory equipment is cleaned and properly
stored after use primarily so that —
A
chemical products can be measured and
recorded as data
B
time is saved in setting up the next
experiment
C
toxic materials can be kept in the
laboratory
D* the possibility of contamination in the
laboratory is minimized
10EN01B01AZ01387
53
What trait will most likely be observed in all
offspring of the above set of parents?
A* Green feathers
B
Yellow feathers
C
Long beak
D
Short beak
10EN02B06DZ01602
BE SURE YOU HAVE RECORDED ALL OF YOUR ANSWERS
Page 133
ON THE ANSWER DOCUMENT.
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 134
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 135
TAKS Gr10 ELA/M/SS/Sci Rel '03
4/8/03
9:48 AM
Page 136
TAKS GRADE 10
SPRING 2003