Life Science Sample Questions

Life Science Sample Questions
Name: ____________________________________________
1)
How many phenotypes resulted from Mendel's cross
between two hybrid green-podded pea plants
(Gg x Gg)? [Use the blank Punnett square below
to work out your answer.]
A) Four
B) Two
2)
How did the invention of the electron microscope help
researchers learn more about viruses?
7)
Changes over time in the mouse and snake
populations in a field ecosystem are shown in the
graph below.
C) Three
D) One
You should never heat a solution in a(n) ‡‡
A)
B)
C)
D)
3)
6)
closed container
clean container
open container
heat-resistant container
What are two ways that the organism shown below
differs from organisms in the Plantae kingdom?
What conclusion can be drawn from this information?
8)
Most plant roots grow underground, therefore they
cannot ‡‡
A) spread out
B) store food
C) gather sunlight
D) absorb nutrients
9)
4)
A snake is different from a lizard for all of the
following reasons except ‡‡
A)
B)
C)
D)
5)
it has no ear openings
it has scaly skin
it has no limbs
it has immovable eyelids
In addition to liver damage, alcohol has been known to
cause ________ damage.
A) brain
C) bone
B) lung
D) muscle
Which letter in the given diagram represents a
centipede? [Explain your answer.]
10)
The diagram below shows a portion of a DNA
molecule.
13)
Which of the following worms is classified as a
flatworm?
A)
B)
The base sequence of the unlabeled strand shown in
the diagram is most likely
A) T-C-T-G
C) G-A-G-T
B) G-A-G-U
D) C-U-C-A
11)
C)
Some of the ideas in Darwin's theory of natural
selection are represented in the diagram below
D)
Which concept would be correctly placed in box X?
A) Ecological succession
B) Passing on of acquired traits
C) Use and disuse
D) Variation
12)
A plant biologist is developing a new fertilizer called
SureGrow. To test whether SureGrow helps plants
grow faster than MegaGrow, a fertilizer already on
the market, she designs an experiment. What should
the scientist do with light during the experiment?
A) Leave the lights on for varying lengths of time
each day.
B) Apply the same amount of light to all the plants.
C) Apply only red light to all the plants.
D) Keep the plants in darkness.
14)
What substance are the fish below adding to the
water as they use up the supply of oxygen in the
water?
A)
B)
C)
D)
Nitrogen
Carbon monoxide
Hydrogen
Carbon dioxide
15)
Questions 20 and 21 refer to the following:
Which of the following is most likely a learned
behavior?
A) A cat running to the kitchen at the sound of a can
opening
B) Birds migrating south to a warmer climate
C) A deer eating grass in a large meadow
D) Fish swimming upstream to mate where they
were born
16)
The angiosperm structure shown below has a similar
function to what gymnosperm structure?
20)
A) Cone
B) Needle
17)
What type of bacteria might be represented by the
microscope image below?
C) Spore
D) Root
Many athletes consume foods rich in carbohydrates
before they compete. Why?
A) Spirillum
B) Coccus
21)
18)
Human insulin is produced naturally in the body.
When someone is a diabetic, they are unable to
properly produce their own insulin. What process do
scientists use in the laboratory to produce insulin that
treat diabetics?
A) ultrasound
B) karyotyping
C) insulinitis
D) recombinant DNA
19)
Explain how a cell differs from a tissue in a
multicellular organism.
C) Bacillus
D) Protozoan
What type of bacteria might be represented in the
microscope image below?
A)
B)
C)
D)
Streptobacillus
Staphylococcus
Streptospirillum
Diplococcus
22)
?
Why are invasive species so detrimental to the
stability of an ecosystem?
A) They all give off toxins in the environment.
B) They all produce too much carbon monoxide.
C) They do not have any food to eat.
D) They do not have any natural predators.
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24)
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Sharks and dolphins are very different organisms
even though the look very much alike.
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23)
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The diagram below represents a microscopic view of
a plant root.
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The process in which the unrelated organisms shown
evolved to resemble each other is known as ‡‡
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A)
B)
C)
D)
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Identify the thread-like structures extending from the
root surface. Explain their function and how they
achieve their purpose.
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All of the following are functions of hair in mammals
excep t ‡‡
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A)
B)
C)
D)
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regulating body temperature
protecting the skin from ultraviolet light
delivering oxygen to the body cells
preventing foreign particles from entering the
nose or eyes
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26)
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punctuated equilibrium
convergent evolution
adaptive radiation
gradualism
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25)
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Which of the following animals belongs to what is considered to be the most intelligent vertebrate group? [Explain
why.]