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Final PACTICE Science Exam

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

What is the function of a cell wall?
a.
to protect and support the cell
b.
to perform different functions in each cell
c.
to prevent water from passing through it
d.
to prevent oxygen from entering the cell
 

 2. 

What is the function of a cell membrane?
a.
to support the cell
b.
to perform different functions in each cell
c.
to control what enters and leaves the cell
d.
to form a hard outer covering for the cell
 

 3. 

Which organelle is the control center of a cell?
a.
mitochondrion
b.
ribosome
c.
nucleus
d.
chloroplast
 

 4. 

Which of the following best describes the function of mitochondria?
a.
They convert energy from food molecules into energy the cell can use.
b.
They store energy from food molecules.
c.
They store energy from sunlight.
d.
They produce nucleic acids that release energy.
 

 5. 

Which term refers to the diffusion of water molecules through a selectively permeable membrane?
a.
osmosis
b.
engulfing
c.
active transport
d.
passive transport
 

 6. 

Which term refers to physical characteristics that are studied in genetics?
a.
traits
b.
offspring
c.
generations
d.
hybrids
 

 7. 

Factors that control traits are called
a.
genes.
b.
purebreds.
c.
recessives.
d.
parents.
 

 8. 

What does the notation AA mean to geneticists?
a.
two dominant alleles
b.
heterozygous alleles
c.
at least one dominant allele
d.
one dominant and one recessive allele
 

 9. 

What does the notation Aa mean to geneticists?
a.
two dominant alleles
b.
two recessive alleles
c.
homozygous alleles
d.
one dominant allele and one recessive allele
 

 10. 

The different forms of a gene are called
a.
alleles.
b.
factors.
c.
masks.
d.
traits.
 

 11. 

An organism’s physical appearance is its
a.
genotype.
b.
phenotype.
c.
codominance.
d.
heterozygous.
 

 12. 

What happens during meiosis?
a.
Two sex cells combine.
b.
Chromosome pairs separate and are distributed into new sex cells.
c.
Each sex cell copies itself to form four new chromosomes.
d.
Chromosome pairs remain together when new sex cells are formed.
 

 13. 

When sex cells combine to produce offspring, each sex cell will contribute
a.
one fourth the number of chromosomes in body cells.
b.
half the number of chromosomes in body cells.
c.
the normal number of chromosomes in body cells.
d.
twice the number of chromosomes in body cells.
 

 14. 

A balanced arrangement of parts is called
a.
radiality.
b.
asymmetry.
c.
symmetry.
d.
bilaterality.
 

 15. 

An animal that has a backbone is called a(n)
a.
cnidarian.
b.
predator.
c.
vertebrate.
d.
invertebrate.
 

 16. 

What does the backbone surround and protect in a vertebrate?
a.
the heart and lungs
b.
vertebrae
c.
the spinal cord
d.
the gill slits
 

 17. 

When the temperature of the environment changes, the body temperature of a reptile
a.
changes.
b.
stays the same.
c.
always increases.
d.
always decreases.
 

 18. 

Fishes take in oxygen through their
a.
fins.
b.
gills.
c.
scales.
d.
vertebrae.
 

 19. 

What structure directs the activities of a cell?
a.
nucleus
b.
cytoplasm
c.
cartilage
d.
cell membrane
 

 20. 

Messages are carried back and forth between the brain and other parts of the body by
a.
respiratory tissue.
b.
nervous tissue.
c.
the circulatory system.
d.
digestive tissue.
 

 21. 

The process by which an organism’s internal environment is kept stable in spite of changes in the external environment is called
a.
healing.
b.
digestion.
c.
homeostasis.
d.
respiration.
 

 22. 

Which organ system makes blood cells?
a.
skeletal system
b.
nervous system
c.
circulatory system
d.
digestive system
 

 23. 

Which of the following is NOT a function of the skeleton?
a.
providing shape and support for the body
b.
obtaining oxygen
c.
protecting internal organs
d.
producing blood cells
 

 24. 

The bones that form the backbone are called
a.
vertebrae.
b.
metatarsals.
c.
tibia.
d.
carpals.
 

 25. 

How does exercise help maintain healthy bones?
a.
by decreasing the need for calcium in the bones
b.
by decreasing the need for phosphorus in the bones
c.
by making bones grow stronger and denser
d.
by making bones produce stronger outer membranes
 

 26. 

Which type of muscle is found only in the heart?
a.
voluntary muscle
b.
cardiac muscle
c.
smooth muscle
d.
soft muscle
 

 27. 

Exercise is important for muscles because it
a.
prevents muscles from becoming tired.
b.
helps maintain strength and flexibility.
c.
gives muscles more energy.
d.
prevents muscle injuries.
 

 28. 

When blood flows into the right atrium from the body, it contains
a.
little oxygen and a lot of carbon dioxide.
b.
a lot of oxygen and little carbon dioxide.
c.
a lot of both oxygen and carbon dioxide.
d.
little of either oxygen or carbon dioxide.
 

 29. 

Which chamber of the heart pumps oxygen-poor blood to the lungs?
a.
left atrium
b.
right atrium
c.
left ventricle
d.
right ventricle
 

 30. 

If a person’s blood lacked platelets, what process could not take place?
a.
carrying oxygen to cells
b.
carrying glucose to cells
c.
clotting of blood
d.
transfusing of blood
 

 31. 

A heart attack affects heart cells by
a.
cutting off blood flow and oxygen and causing cells to die.
b.
creating a buildup of fatty substances such as cholesterol within cells.
c.
destroying white blood cells.
d.
preventing the ventricles from contracting.
 

 32. 

What part of a neuron carries nerve impulses away from the cell body?
a.
axon
b.
synapse
c.
dendrite
d.
nucleus
 

 33. 

The thick column of nerve tissue that links the brain to most of the nerves in the peripheral nervous system is the
a.
brain.
b.
spinal cord.
c.
cerebellum.
d.
cornea.
 

 34. 

Which activity does your cerebrum control?
a.
remembering equations that you learn in class while taking a math test
b.
breathing as you sleep
c.
keeping your balance as you walk across a rocky seashore
d.
an increase in heart rate after running a race
 

 35. 

The brain and spinal cord make up the
a.
central nervous system.
b.
peripheral nervous system.
c.
somatic nervous system.
d.
autonomic nervous system.
 

 36. 

The three regions that make up the brain include the cerebrum, cerebellum, and
a.
senses.
b.
brain stem.
c.
spinal cord.
d.
retina.
 

 37. 

The nucleus of a cell does what?
a.
Sends materials throughout the cell
c.
Produces energy
b.
Directs the cells activities and reproduction
d.
Helps in osmosis
 

 38. 

What is diffusion?
a.
The process by which material travels through the cell wall
c.
To put out a flame
b.
The scattering of light
d.
The movment of particles from a high concentration to a low concentration
 

 39. 

What is osmosis?
a.
When water passes through the cell membrane
c.
The process of cell division
b.
A process of absorbing new information
d.
The name of Mr. Howe’s pet snake
 

 40. 

What is Meiosis?
a.
The process of copying the chromosomes of a cell to make a new copy of that cell
c.
A form of food
b.
The process of making new cells with exactly half the number of usual chromosomes. This is when the sex cells are made.
d.
One of the steps during Mitosis
 

 41. 

What is Mitosis?
a.
A special type of food
c.
The process of making new cells with exactly half he number of usual chromosomes. This is when sex cells are made.
b.
The process of copying the chromosomes of a cell to make a new copy of that cell
d.
One of the steps during Meiosis
 

 42. 

What is the difference between Alleles and Genes?
a.
Genes you wear and Alleles have to do with heredity
c.
Genes are the building blocks of cells while Alleles have to do with eye color
b.
Genes are the instructions that combine to make Alleles
d.
Genes are the dominant trait and Alleles the recessive trait
 

 43. 

What is the difference between genotype and phenotype?
a.
Genotype is the inherited combination of alleles and phenotype the inherited physical appearance
c.
Phenotype is the inherited combination of alleles and Genotype the inherited physical appearance
b.
A type of pants and ahirt
d.
No idea
 

 44. 

Which of the following is NOT found in animal cells?
a.
Cell Wall
c.
Lysosomes
b.
Cell Membrane
d.
Vesicle
 

 45. 

Which of the following is an example of an organelles?
a.
Mitochondria
c.
Vacuole
b.
Ribosomes
d.
All the above
 

 46. 

Which of the following describes Mitochondria?
a.
Orgenelles where proteins are made
c.
Where photosynthesis occurs
b.
cell organelles that break down food molecules to make energy
d.
Transports materials out of the cell
 

 47. 

What is an Invertebrate animal?
a.
animal without a backbone
c.
animal with a backbone
b.
animal with a tail
d.
none of the above
 

 48. 

What is a vertebrate animal?
a.
animal that has a pouch
c.
animal without a backbone
b.
animal that gives birth
d.
animal with a backbone
 

 49. 

What does symetrical refer to?
a.
a body with two similar halves
c.
the difference between Mr. Howe’s arms and legs
b.
a body without similar halves
d.
All the above
 

 50. 

What type of animal carries their young in a pouch?
a.
Carnivors
c.
Marsupials
b.
Invertebrates
d.
Placental Mammals
 

 51. 

What is the purpose of the Swim Bladder on a fish
a.
to hold urin
c.
a balloon like organ filled with gases to help the fish float
b.
to hold food
d.
to help the fish swim fast
 

 52. 

What does the vertebrate protect?
a.
internal organs
c.
spinal chord
b.
the brain
d.
Nothing. It just helps th body stay upright
 

 53. 

What is the purpose of the skeletal system?
a.
To protect your inernal organs
c.
To provide something for your musccels to attach to
b.
To provide support
d.
All the above
 

 54. 

Which type of muscel is found in the heart?
a.
connective tissue
c.
cardiac muscel
b.
tendon
d.
smooth muscel
 

 55. 

What are the four types of tissue that the human body is made of?
a.
nervous tissue, heart tissue, organ tissue, brain tissue
c.
organ tissue, muscel tissue, cardiac tissue, connective tissue
b.
epithelial tissue, nervous tissue, muscel tissue, connective tissue
d.
none of the above
 

 56. 

Which of the following is made up of cells that can contract and relax?
a.
skeletal tissue
c.
connective tissue
b.
muscel tissue
d.
nervous tissue
 

 57. 

The organ system that provides support and protection for the body parts is the...
a.
endocrine system
c.
skeletal system
b.
circulatory system
d.
integumentary system
 

 58. 

How many chambers are in the heart?
a.
2
c.
1
b.
4
d.
none
 

 59. 

Which atrium receives oxygen-poor blood from the body?
a.
Left Atrium
c.
Left Ventricle
b.
Right Atrium
d.
Right Vantricle
 

 60. 

Blood enters the heart from the body into what part?
a.
Left Atrium
c.
Left Ventricle
b.
Right Atrium
d.
Right Ventricle
 

 61. 

Oxygen rich blood enters the heart from the lungs into what chamber?
a.
Left Atrium
c.
Left Ventricle
b.
Right Atrium
d.
Right Ventricle
 

 62. 

Oxygen rich blood leaves the heart to the body from which chamber?
a.
Right Atrium
c.
Left Vantricle
b.
Left Atrium
d.
Right Ventricle
 

 63. 

Information is transfered to other cells by a long fiber called what?
a.
dendrite
c.
axons
b.
neurons
d.
impulse
 

 64. 

Cells that transfer messages throughout the body in the form of electrical impulses are what?
a.
impulses
c.
dendrites
b.
neurons
d.
axons
 

 65. 

Which part of the nervous system controls all functions of the body?
a.
spinal chord
c.
heart
b.
brain
d.
neurons and axons
 

 66. 

Which part of the brain is responsible for memory and thinking?
a.
cerebrum
c.
medulla
b.
cerebellum
d.
all the above
 

 67. 

Which part of the brain allows the brain to track the body’s position and receives sensory impulses?
a.
medulla
c.
cerebrum
b.
cerebellum
d.
brain stem
 

 68. 

The part of your brain that connects to the spinal chord is...
a.
cerebellum
c.
medulla
b.
cerebrum
d.
mid-brain
 

 69. 

In the eye, light is detected by cells at the back of the eye in a layer called ___________.
a.
The Retina
c.
The Optic Nerve
b.
The Cones
d.
The lens
 

 70. 

The colorful part of the eye is called the_____________.
a.
retina
c.
iris
b.
pupil
d.
rods
 

 71. 

The semi-clear oval shaped part of the eye that light passes through is called the______.
a.
photoreceptors
c.
lens
b.
iris
d.
rods
 

 72. 

Which part of the brain regulates blood pressure?
a.
spinal chord
c.
cerebellul
b.
cerebral hemisphere
d.
medulla
 

 73. 

Why does Mr. How resemble popeye, with big arms and little chicken legs?
a.
because of a deformation at birth
c.
because his body was pieced together like frankenstein
b.
because he has DNA of both a human and chicken
d.
All of the above (This is the correct answer!)
 

 74. 

Two conditions are required for cloud formation: cooling of the air and
a.
the absorption of infrared energy.
b.
the unequal heating of Earth’s surface.
c.
the presence of particles in the air.
d.
the influence of the Coriolis effect.
 

 75. 

Any form of water that falls from clouds is called
a.
dew.
b.
evaporation.
c.
condensation.
d.
precipitation.
 

 76. 

A funnel-shaped cloud that touches Earth’s surface is called a
a.
hurricane.
b.
cyclone.
c.
tornado.
d.
thunderhead.
 

 77. 

If a bicyclist travels 30 kilometers in two hours, her average speed is
a.
30 km/h.
b.
60 km/h.
c.
15 km/h.
d.
2 km/h.
 

 78. 

Unlike kinetic energy, potential energy is
a.
energy of motion.
b.
stored.
c.
conserved.
d.
not measurable.
 

 79. 

Potential energy that depends on height is called
a.
kinetic energy.
b.
gravitational potential energy.
c.
elastic potential energy.
d.
mechanical energy.
 

 80. 

The amount of matter in an object is called its
a.
inertia.
b.
mass.
c.
force.
d.
balance.
 

 81. 

The greater the mass of an object,
a.
the easier the object starts moving.
b.
the greater its inertia.
c.
the more balanced it is.
d.
the more space it takes up.
 

 82. 

The achievement of lifting a rocket off the ground and into space can be explained by
a.
Newton’s first law.
b.
Newton’s second law.
c.
Newton’s third law.
d.
the law of conservation of momentum.
 

 83. 

Air pressure decreases as
a.
velocity increases.
b.
elevation increases.
c.
acceleration decreases.
d.
gravity increases.
 

 84. 

An object that is more dense than the fluid in which it is immersed will
a.
sink.
b.
rise.
c.
neither rise nor sink.
d.
sink at first, than rise slowly.
 

 85. 

Bernoulli’s principle helps to explain
a.
hydraulic brakes.
b.
buoyancy.
c.
momentum.
d.
flight.
 

 86. 

The variable that is expected to change because of another variable is known as the
a.
manipulated variable.
b.
responding variable.
c.
controlled variable.
d.
independent variable.
 

 87. 

In a well-designed experiment, the one variable that is purposely changed is known as the
a.
manipulated variable.
b.
responding variable.
c.
controlled variable.
d.
independent variable.
 

 88. 

One example of a physical change is
a.
burning paper.
b.
baking cookies.
c.
heating table sugar.
d.
dissolving salt in water.
 

 89. 

One example of a chemical change is
a.
filtering.
b.
burning wood.
c.
boiling water.
d.
crushing a can.
 

 90. 

A disturbance that transfers energy from place to place is called a
a.
wave.
b.
medium.
c.
vibration.
d.
compression.
 

 91. 

Mechanical waves are created when a source of energy causes a medium to
a.
move.
b.
compress.
c.
expand.
d.
vibrate.
 

 92. 

Which waves have some electrical properties and some magnetic properties?
a.
longitudinal waves
b.
transverse waves
c.
mechanical waves
d.
electromagnetic waves
 

 93. 

Electromagnetic waves can transfer energy without a(n)
a.
medium.
b.
electric field.
c.
magnetic field.
d.
change in either a magnetic or an electric field.
 

 94. 

What is transferred by electromagnetic waves?
a.
sound
b.
electricity
c.
electromagnetic radiation
d.
resonance
 

 95. 

The atmosphere is
a.
the layer in which weather occurs.
b.
the layer that contains the ozone layer.
c.
the layer of water in the oceans.
d.
the layer of gases that surrounds Earth.
 

 96. 

The air pressure acting on the roof of your house
a.
comes from the air within a few feet of your rooftop.
b.
is much greater on top of the roof than below it.
c.
comes from all the air above your roof.
d.
is much greater underneath your roof than on top of it.
 

 97. 

As you rise upwards in the atmosphere, air pressure
a.
increases.
b.
decreases.
c.
doesn’t change.
d.
first increases, then decreases.
 

 98. 

When climbing a high mountain, you get out of breath easily because
a.
the percentage of oxygen in the air decreases.
b.
the air is more dense.
c.
there is less oxygen in each cubic meter of air.
d.
air pressure is greater.
 

 99. 

Heat from the sun reaches you by
a.
conduction.
b.
light emission.
c.
convection.
d.
radiation.
 

 100. 

Convection takes place because
a.
warm air is more dense than humid air.
b.
warm and cold air have the same density.
c.
cold air is less dense than warm air.
d.
cold air is more dense than warm air.
 

 101. 

The energy associated with motion is called
a.
kinetic energy.
b.
elastic potential energy.
c.
gravitational potential energy.
d.
nuclear energy.
 

Essay
 

 102. 

In your oppinion, what was your favorite:

1) Classroom Experiment–

2) Field Trip–

3) Science Project—

4) Dissection
 



 
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