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CRCT
Review Questions
1.
 1. Which metric unit would you use to
measure the mass of an object?




U1MA
A. Meters
B. Grams
C. Inches
D. Pounds
2.
 Place the classification groups from largest
to smallest.
 A. Kingdom, Phylum, Family, Order, Genus,
Species, Class
 B. Kingdom, Phylum, Class, Order, Family,
Species, Genus
 C. Kingdom, Phylum, Class, Order, Family,
Genus, Species
 D. Kingdom, Species, Genus, Family, Order,
Class, Phylum
3.
 All organisms classified in the same
Order must also be classified in the
same ____________.
 A. Family
 B. Species
 C. Phylum
 D. Genus
4.
 Erin guesses that it is about 100
meters from our room to the office.
She is ____________.
 A. Measuring
 B. Inferring
 C. Estimating
 D. Hypothesizing
5.
 Which quotation is an example of a
hypothesis?
 A. “I think the Falcons will win the Super
Bowl next year.”
 B. “I think that Mr. Stokes is the best
science teacher ever.”
 C. “I think I will pass the science part of
the CRCT this year.”
 D. “I think high school will be fun
because I’ll get to pick my classes.”
6.
 Which of the cell parts listed below is
the “control center” of the cell?
A. cell membrane
B. cytoplasm
C. nucleus
D. cell wall
7.
 What is the primary purpose of
mitochondria in a cell?
A. They store genetic information.
B. They convert food molecules into energy
the cell can use.
C. They trap sunlight and use the energy to
make food.
D. They ship proteins and other substances
across the cell membrane.
8.
 Which of the following correctly lists an
organism’s structure from simple to
complex?
A. cells, organs, tissues, organ systems, organisms
B. cells, tissues, organs, organ systems, organisms
C. tissues, cells, organs, organ systems, organisms
D. tissues, organs, cells, organ systems, organisms
9.
 What is the function of the cell
membrane?
A. Moves materials in and out of the cell.
B. Stores materials such as water.
C. Carries nutrients throughout the cell.
D. Carries waste away from the cell.
10.
 Suppose there is a town called
Cellville. Which building in Cellville
would have a purpose similar to the
mitochondria of the cell?
A.
B.
C.
D.
the
the
the
the
library
water tower
power plant
police station
11.
 The END products of respiration are:
A.
B.
C.
D.
glucose and water
carbon dioxide, water, and energy
oxygen, water, and energy
glucose and carbon dioxide
12.
 Photosynthesis is the process in
which light energy is converted into
food. Which of the following is
produced by photosynthesis?
A.
B.
C.
D.
light
heat
protein
sugar
13.
 Where in the cell does respiration
occur?
A.
B.
C.
D.
mitochondria
chloroplasts
ribosomes
cell membrane
14.
 Which statement best explains
osmosis?
A. osmosis is the
B. osmosis is the
C. osmosis is the
a mixture
D. osmosis is the
a membrane
movement of water
diffusion of water
diffusion of water through
diffusion of water through
15.
 The cell membrane is to the cell as a
___________________ is to a
classroom.
A.
B.
C.
D.
desk
power outlet
book
door
16.
 Diffusion is the movement of
molecules from an area of high
concentration to an area of low
concentration. Which of the
following is an example of diffusion?
A. Open a gate to allow horses to pass
through.
B. Food coloring spreading through water.
C. Carrying books to class.
D. Walking against the flow of traffic.
17.
 Specialized cells that are similar in
structure and function are usually
joined together to form ________.
A.
B.
C.
D.
tissues
organs
organ systems
organisms
18.
 Where would this cell most likely be
found?
A. Bacteria
C.leaf
B. Frog
D.mushroom
19.
1)In which plant cell structure does photosynthesis occur?
A.
B.
C.
D.
Vacuole
Chloroplast
Cytoplasm
Nucleus
20.
 New yeast grows on a parent yeast
organism, and breaks off when it is
ready to form a new, separate
organism. What type of
reproduction is this an example of?
A.
B.
C.
D.
Sexual reproduction
Mitosis
Regeneration
Asexual reproduction
21.
 Which of the following traits of a dog
is inherited from its parents?
A.
B.
C.
D.
the
the
the
the
presence of fleas in its fur
color of its fur
ability to sit up and beg
habit of barking to go outside
22.
 Each form of a gene is called an allele. The
alleles for human blood type are A, B, and
O. Both the allele for type A blood and type
B blood are dominant. The allele for type O
blood is recessive. What blood type will a
person have if he inherits an allele for type
A and an allele for type O?
A. Type A
B. Type B
C. Type AB
D. Type O
23.
 DNA is essential to living organisms
because it —
A. carries the genetic code.
B. is a spiral helix.
C. can prevent diseases.
D. can break apart.
24.
 Poodles, like all dog breeds, are so closely
related to wolves that they can breed with
them. What is the best explanation for why
wolves and poodles do not look alike,
despite being extremely close relatives?
A. Poodles have naturally evolved to look
differently from wolves.
B. Wolves once resembled poodles, but quickly
died out in the wild.
C. Wolves once resembled poodles, but they
evolved to look differently.
D. Poodles are the result of people selectively
breeding them for specific traits.
25.
 The scientific name of the
domesticated dog is Canius lupus.
Which of the following animals would
be most closely related to the dog?
A. Felis domesticus
B. Canius latrans
C. Felis lupus
D. Vulpes cana
26.

Ken owns a peacock farm. One day, a large batch
of eggs hatch and Ken discovers that a few of the
chicks are white instead of blue. White chicks can
be sold for $100 each, instead of the $50 that
people pay for blue chicks. If Ken wants to raise
more white peacocks in order to make more
money, what should he do?
A.
B.
C.
D.
He should continue breeding the peacocks the same way.
He should always be sure to cross blue peacocks with white
peacocks.
He should isolate the white peacocks and allow them only to
breed with each other.
He should bleach the blue peacocks white before allowing them
to breed with any white peacocks.
27.
Mike and his three brothers all have brown hair.
Mike's father has brown hair, too. Mike's mother,
however, is the only family member that has red hair
color. What likely conclusion can you draw about the
gene for hair color?
A. The gene for red hair is dominant over the gene for
brown hair.
B. The gene for brown hair is dominant over the gene
for red hair.
C. Neither brown nor red are dominant since they both
occur in the same family.
D. Red and brown genes are co-dominant
28.
George Washington XIV decides that he likes a
particular cherry tree in his yard. He makes a
number of cuttings from this tall, white-flowered
parent tree. The cuttings grow up into new cherry
trees. What is true about the offspring cherry trees
produced from cuttings?
A. The offspring trees will be inferior to the parent tree.
B. The offspring trees are clones of the parent tree and
should look very similar.
C. The offspring trees will vary greatly in height but
they will all have white flowers.
D. Some offspring trees will develop white flowers,
while others will develop flowers of different colors.
29.
If you cross-pollinate a tall pea plant
with a short pea plant, the offspring
would be:
A.
B.
C.
D.
Heterozygous
Homozygous
Purebred
Mutated
30.
Sarah is home sick with a flu virus. What is
her body doing to help her get better?
A. Her digestive system is breaking down the
virus.
B. Her reproductive system is making healthy new
cells.
C. Her endocrine system is making hormones to
fight the virus.
D. Her immune system is working to attack the
virus.
31.
After blood is used, it is recycled back to
the heart where it is eventually pumped
back through the body. Before it can be
reused, which organ must the blood pass
through before it is returned to the rest of
the body?
A. the stomach, because it must receive nutrients
B. the lungs, because it must be re-oxygenated
C. the skin, because it must release excess heat
D. brain, because it must receive messages
32.
All human body systems work together.
What would happen to Samantha if one of
her systems began to fail?
A. The other systems would continue to function as
usual.
B. The system that is inefficient could be removed.
C. The system directly beside the inefficient
system would take over the functions of the
inefficient system.
D. The other systems would begin to fail
eventually.
33.
Use the list below to answer this question.
 carrying oxygen to the cells
 carrying carbon dioxide away from the cells
 carrying food to the cells
 carrying waste products away from the cells
Which system is most responsible for all of the body
functions listed above?
A. circulatory system
B. muscular system
C. nervous system
D. respiratory system
34.
Which of these best completes the
statement about the interaction of
the digestive system with the
circulatory system? The digestive
system adds:
A.
B.
C.
D.
nutrients to the blood
bile to the blood
oxygen to the blood
carbon dioxide to the blood
35.
 Where, in a cell, does respiration
occur?
A.
B.
C.
D.
mitochondria
chloroplasts
ribosomes
cell membrane
36.
 Photosynthesis is the process in
which light energy is converted into
food. Which of the following is
produced by photosynthesis?
A.
B.
C.
D.
light
heat
protein
sugar
37.
 What type of cell MUST take in
carbon dioxide in order to stay alive?
A.
B.
C.
D.
plant cell
animal cell
fungal cell
yeast cell
38.
 The process of releasing energy from
food is called
A.
B.
C.
D.
plant transpiration
human circulation
body perspiration
cell respiration
39.
 Food-producing and energyproducing organelles in plants are
A.
B.
C.
D.
chloroplasts and mitochondria.
Golgi bodies and chloroplasts.
lysosomes and Golgi bodies.
mitochondria and lysosomes.
40.
 Which of the following would be an
example of a competitive
relationship?
A.
B.
C.
D.
a
a
a
a
hawk and an owl
bee and a flower
fish and seaweed
lion and a gazelle
41.
 Which of the following would be
biotic?
A.
B.
C.
D.
water
producers
soil
the sun
42.
 Clownfish live among sea anemones for
protection and shelter. The sea anemone
feeds on predators of the clown fish. What
type of relationship is represented by a
clownfish living near a sea anemone?
A.
B.
C.
D.
commensalism
mutualism
parasitism
predator/prey
43.
 Hermit crabs live in shells that were
abandoned by snails. This neither
helps nor harms the snails. What
type of relationship is this?
A.
B.
C.
D.
commensalism
mutualism
parasitism
predator/prey
44.
On this food web what is the original
source of energy for the fox?