PRAXIS 5005 Science ETS Practice Test || QUESTIONS
WITH A+ GRADED SOLUTIONS!!
The process by which a gas becomes a liquid is called
A.condensation
B.freezing
C.melting
D.reduction correct answers A.condensation
Condensation is the process by which a gas becomes a liquid.
Which of the following human organs is responsible for the formation of sperm cells?
A.Pancreas
B.Thyroid
C.Ovary
D.Testis correct answers D.Testis
In human males, the testis is the organ in which the formation of sperm cells occurs.
Which of the following best describes the approximate length of time it takes Earth to rotate
once about its axis?
A.One hour
B.One day
C.One month
D.One year correct answers B.One day
On average, it takes 24 hours, or one day, for Earth to rotate once about its axis. The rotation
of Earth about its axis leads to the cycle of day and night.
Which THREE of the following are generally acceptable rules for laboratory activities?
A.Students should wash their hands after mixing chemicals in the laboratory.
B.Students should inform the teacher immediately of any accidents or spills in the laboratory.
C.Students should use cracked glassware only when the teacher is in the laboratory.
D.Students should read instructions thoroughly before performing laboratory procedures.
correct answers A.Students should wash their hands after mixing chemicals in the laboratory.
B.Students should inform the teacher immediately of any accidents or spills in the laboratory.
D.Students should read instructions thoroughly before performing laboratory procedures
To prevent accidental ingestion or absorption of potentially harmful substances, students
should wash their hands after working with chemicals. To help maintain a safe environment,
accidents and spills in the laboratory should be reported to the teacher immediately so that a
correct response can be implemented. To safely and effectively complete laboratory
procedures, students should read instructions thoroughly before starting the procedures.
Cracked glassware is a safety hazard and should never be used.
,Which of the following processes most directly involves the movement of water from the
atmosphere to Earth's surface?
A.Infiltration
B.Precipitation
C.Transpiration
D.Sublimation correct answers B.Precipitation
Precipitation is the process by which atmospheric water falls to Earth's surface in the form of
rain, hail, sleet, or snow. Because atmospheric water returns to Earth's surface primarily
through the process of precipitation, it is an important part of the water cycle. Infiltration is
the process by which water on Earth's surface enters the subsurface soil and rock.
Transpiration is the process by which water evaporates from plant leaves and enters the
atmosphere. Sublimation is the process by which a substance transitions directly from the
solid phase to the gas phase without going through the liquid phase.
Which of the following is an important function of the digestive system?
A.Absorbing nutrients into the body
B.Transporting signals to and from different parts of the body
C.Providing structural support for the body
D.Protecting the body from ultraviolet radiation correct answers A.Absorbing nutrients into
the body
The digestive system includes organs that break down food into small molecules, which are
then absorbed into the body. The primary location of absorption is the small intestine.
As a rock begins tumbling down a hillside, most of its gravitational potential energy is
converted into
A.kinetic energy
B.thermal energy
C.chemical energy
D.nuclear energy correct answers A.kinetic energy
Kinetic energy is the energy of motion. As the rock begins moving down the hillside under
the influence of gravity, most of the rock's gravitational potential energy is converted into
kinetic energy.
Which of the following is the best example of an interaction between different biotic factors
in an ecosystem?
A.A caterpillar undergoing metamorphosis
B.A plant absorbing sunlight
C.A grazing animal eating plants
D.An icicle melting on a warm day correct answers C.A grazing animal eating plants
A grazing animal eating plants is an example of an interaction between two different biotic
factors (an animal and the plants it eats) in an ecosystem. The metamorphosis of a caterpillar
into a butterfly is an example of a type of insect life cycle. A plant absorbing sunlight is an
, example of an interaction between a biotic factor (a plant) and an abiotic factor (sunlight). An
icicle melting on a warm day is an example of an interaction between two abiotic factors
(water and temperature).
A neutral atom becomes a positive ion when it loses one or more
A.electrons
B.neutrons
C.protons
D.nuclei correct answers A.electrons
Protons are positively charged, and electrons are negatively charged. A neutral atom has the
same number of protons and electrons. A neutral atom becomes a positive ion when it loses
one or more electrons, resulting in the ion having more positive charges than negative
charges.
Which of the following best describes a galaxy?
A.A small celestial body composed of ice
B.A giant planet orbited by ten or more moons
C.A collection of planets revolving around a star
D.A large cluster of stars, dust, and gas correct answers D.A large cluster of stars, dust, and
gas
A galaxy is a system composed of many stars, dust, and gas, which is held together by
gravitational attraction.
An object is moving in a straight line at a constant speed. What will happen if a constant
force is then applied to the object in the same direction in which the object is moving?
A.The object will stop moving.
B.The object will continue moving in the same direction but will slow down.
C.The object will continue moving in the same direction but will speed up.
D.The object will move in the opposite direction but at the same speed as before. correct
answers C.The object will continue moving in the same direction but will speed up.
When a constant force is applied to the object in the same direction in which the object is
moving, the object will accelerate in that direction.
Which of the following molecules is a product of cellular respiration and is used for energy
transfer in cells?
A.ATP
B.Carbon dioxide
C.Oxygen
D.Water correct answers A.ATP
ATP is a small molecule that stores and transports chemical energy in cells. Cellular
respiration is a multistep process in cells that uses chemical energy stored in glucose and
other organic molecules to produce ATP.
WITH A+ GRADED SOLUTIONS!!
The process by which a gas becomes a liquid is called
A.condensation
B.freezing
C.melting
D.reduction correct answers A.condensation
Condensation is the process by which a gas becomes a liquid.
Which of the following human organs is responsible for the formation of sperm cells?
A.Pancreas
B.Thyroid
C.Ovary
D.Testis correct answers D.Testis
In human males, the testis is the organ in which the formation of sperm cells occurs.
Which of the following best describes the approximate length of time it takes Earth to rotate
once about its axis?
A.One hour
B.One day
C.One month
D.One year correct answers B.One day
On average, it takes 24 hours, or one day, for Earth to rotate once about its axis. The rotation
of Earth about its axis leads to the cycle of day and night.
Which THREE of the following are generally acceptable rules for laboratory activities?
A.Students should wash their hands after mixing chemicals in the laboratory.
B.Students should inform the teacher immediately of any accidents or spills in the laboratory.
C.Students should use cracked glassware only when the teacher is in the laboratory.
D.Students should read instructions thoroughly before performing laboratory procedures.
correct answers A.Students should wash their hands after mixing chemicals in the laboratory.
B.Students should inform the teacher immediately of any accidents or spills in the laboratory.
D.Students should read instructions thoroughly before performing laboratory procedures
To prevent accidental ingestion or absorption of potentially harmful substances, students
should wash their hands after working with chemicals. To help maintain a safe environment,
accidents and spills in the laboratory should be reported to the teacher immediately so that a
correct response can be implemented. To safely and effectively complete laboratory
procedures, students should read instructions thoroughly before starting the procedures.
Cracked glassware is a safety hazard and should never be used.
,Which of the following processes most directly involves the movement of water from the
atmosphere to Earth's surface?
A.Infiltration
B.Precipitation
C.Transpiration
D.Sublimation correct answers B.Precipitation
Precipitation is the process by which atmospheric water falls to Earth's surface in the form of
rain, hail, sleet, or snow. Because atmospheric water returns to Earth's surface primarily
through the process of precipitation, it is an important part of the water cycle. Infiltration is
the process by which water on Earth's surface enters the subsurface soil and rock.
Transpiration is the process by which water evaporates from plant leaves and enters the
atmosphere. Sublimation is the process by which a substance transitions directly from the
solid phase to the gas phase without going through the liquid phase.
Which of the following is an important function of the digestive system?
A.Absorbing nutrients into the body
B.Transporting signals to and from different parts of the body
C.Providing structural support for the body
D.Protecting the body from ultraviolet radiation correct answers A.Absorbing nutrients into
the body
The digestive system includes organs that break down food into small molecules, which are
then absorbed into the body. The primary location of absorption is the small intestine.
As a rock begins tumbling down a hillside, most of its gravitational potential energy is
converted into
A.kinetic energy
B.thermal energy
C.chemical energy
D.nuclear energy correct answers A.kinetic energy
Kinetic energy is the energy of motion. As the rock begins moving down the hillside under
the influence of gravity, most of the rock's gravitational potential energy is converted into
kinetic energy.
Which of the following is the best example of an interaction between different biotic factors
in an ecosystem?
A.A caterpillar undergoing metamorphosis
B.A plant absorbing sunlight
C.A grazing animal eating plants
D.An icicle melting on a warm day correct answers C.A grazing animal eating plants
A grazing animal eating plants is an example of an interaction between two different biotic
factors (an animal and the plants it eats) in an ecosystem. The metamorphosis of a caterpillar
into a butterfly is an example of a type of insect life cycle. A plant absorbing sunlight is an
, example of an interaction between a biotic factor (a plant) and an abiotic factor (sunlight). An
icicle melting on a warm day is an example of an interaction between two abiotic factors
(water and temperature).
A neutral atom becomes a positive ion when it loses one or more
A.electrons
B.neutrons
C.protons
D.nuclei correct answers A.electrons
Protons are positively charged, and electrons are negatively charged. A neutral atom has the
same number of protons and electrons. A neutral atom becomes a positive ion when it loses
one or more electrons, resulting in the ion having more positive charges than negative
charges.
Which of the following best describes a galaxy?
A.A small celestial body composed of ice
B.A giant planet orbited by ten or more moons
C.A collection of planets revolving around a star
D.A large cluster of stars, dust, and gas correct answers D.A large cluster of stars, dust, and
gas
A galaxy is a system composed of many stars, dust, and gas, which is held together by
gravitational attraction.
An object is moving in a straight line at a constant speed. What will happen if a constant
force is then applied to the object in the same direction in which the object is moving?
A.The object will stop moving.
B.The object will continue moving in the same direction but will slow down.
C.The object will continue moving in the same direction but will speed up.
D.The object will move in the opposite direction but at the same speed as before. correct
answers C.The object will continue moving in the same direction but will speed up.
When a constant force is applied to the object in the same direction in which the object is
moving, the object will accelerate in that direction.
Which of the following molecules is a product of cellular respiration and is used for energy
transfer in cells?
A.ATP
B.Carbon dioxide
C.Oxygen
D.Water correct answers A.ATP
ATP is a small molecule that stores and transports chemical energy in cells. Cellular
respiration is a multistep process in cells that uses chemical energy stored in glucose and
other organic molecules to produce ATP.
