Download 6th GRADE SCIENCE - Salt Lake City School District

Salt Lake City School District
Sixth Grade Science
Standard 2 ASSESSMENT
Simple Organisms
Directions: Choose the best answer for
each question. Then mark your choice on
your answer sheet.
4. Which statement is true of ALL bacteria?
A) All bacteria are producers.
B) All bacteria are single-celled
organisms.
C) All bacteria have a cell with a nucleus.
D) All bacteria live in water.
1. Which of the following best describes
where microorganisms live?
A)
B)
C)
D)
Dark, cold places
Nearly everywhere
Sunny, dry places
Underwater
5. Raquel placed a jar of water containing
Euglena, a green plant-like protist, in a
sunny window. She placed a black
covering over one-half of the jar. What do
you think she will observe when she
returns in one hour to observe the water
samples with a microscope?
2. Bacteria are classified by__________.
A)
B)
C)
D)
color.
shape.
size.
where they live.
A) She will find Euglena equally
throughout the jar.
B) She will find more Euglena at the
bottom of the jar.
C) She will find more Euglena in the side
of the jar in the dark.
D) She will find more Euglena in the side
of the jar in the light.
3. Which of the following correctly describes
the size of fungi compared to the size of
bacteria?
A)
B)
C)
D)
Bacteria are larger.
Fungi are larger.
They are about the same size.
They are the same size but different
shapes.
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Cilia →
9. What do we call organisms that obtain
food by feeding on dead or decaying
organisms?
A)
B)
C)
D)
6. What is the function of cilia?
A)
B)
C)
D)
To control cell division
To make food from sunshine and air
To move the paramecium
To take in water and remove waste
10. How does adding yeast change bread
dough?
A) Yeast causes bubbles of gas to form in
the dough.
B) Yeast makes the dough flexible and
clean.
C) Yeast changes the bread’s color.
D) Yeast results in no change to the
dough.
7. How do bacteria help our bodies function?
A) They make our muscles and lungs
stronger.
B) They help carry oxygen through our
blood.
C) They help to digest food in the
intestines.
D) They make our skin flexible and clean.
11. Of these foods, which was NOT
produced with the help of bacteria?
A)
B)
C)
D)
8. Helpful bacteria can do all of the following
EXCEPT ______________.
A)
B)
C)
D)
Algae
Decomposers
Flagellate
Parasites
Cheese
Milk
Pickles
Yogurt
digest dead organisms.
help clean up soils.
make medicines.
preserve canned food.
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12. An antibiotic is a drug used to kill
___________.
A)
B)
C)
D)
15. Which of the following would provide the
most detailed view of bacteria?
bacteria.
colds.
fungus.
viruses.
A)
B)
13. What has been the greatest benefit of
discovering the fungus penicillium?
A)
B)
C)
D)
Better cancer treatments
Improving crop yields
Development of an important antibiotic
Production of better tasting
mushrooms
C)
D)
14. Which statement best describes
pasteurization?
A) Pasteurization is a process of heating
food to a high enough temperature to
destroy harmful bacteria.
B) Pasteurization is a process of heating
fruit juices so that they can retain their
flavor even after they are packaged.
C) Pasteurization is a process used by
dairy farmers to make sure the fat in
milk does not separate.
D) Pasteurization is the process used to
treat people suspected of having
rabies.
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17. Which of the following is a process of the
food industry that uses heat to kill
harmful bacteria?
The 6th grade students were each given
an assignment to prepare an
experiment on microorganisms at home
that they could share with the class.
Part of their assignment was to write
about their experiment and what they
learned about microorganisms from
doing this experiment. Here are a few
examples:
A)
B)
C)
D)
1. Mary grew mold on potato slices in
four different temperatures. She
carefully recorded her data, took
pictures of the growth, and wrote a
complete conclusion.
2. Scott grew fungi on bread. He
tested the effects of the amount of
moisture on the growth of fungi. He
explained to the class what he had
learned with the help of a graph.
3. Leslie wanted to test different foods
to see which one would grow fungi
best. She wrote a hypothesis
before she started. She carefully
monitored her project and recorded
the data. She understood and
explained to the class which food
has worked the best.
4. Candice wanted her project to test
whether fungi would grow better in a
dark area or in a light area. She
wrote a problem, did research,
wrote a hypothesis, wrote her
procedure, did her experiment, kept
data, and wrote a conclusion.
18. What is the cause of athlete’s foot?
A)
B)
C)
D)
Algae
Bacteria
Fungi
Paramecium
Every morning Sara eats an orange.
Her mother keeps a bowl of fruit on the
kitchen table for the family. Sara has
noticed that this summer the oranges
have a few spots with white powdery
appearances and a bitter taste. She
wonders what is happening.
19. Using your knowledge of fungi, which of
the following might prevent the mold
from growing?
16. Which student conducted the most
scientific experiment?
A)
B)
C)
D)
Botulism
Fission
Pasteurization
Vaccination
Mary
Scott
Leslie
Candice
A)
B)
C)
D)
Buy a different type of orange.
Keep the oranges in the refrigerator.
Put the oranges in a damp place.
Put the oranges in a warm place.
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20. Which of the following is true of fungi?
A)
B)
C)
D)
23. Which of the following could be
classified as a fungus?
Fungi contain chlorophyll.
Fungi decompose organic matter.
Fungi have flagella.
Fungi make their own food.
A)
B)
C)
D)
21. The science teacher wanted to show
students the need for clean hands. She
prepared four culture plates of nutrient
agar and made certain that the agar was
not contaminated. She then touched
Plate 1 with her fingers. She rinsed her
hands under running water and touched
Plate 2. She used liquid soap and
running water to wash her hands and
then touched Plate 3. Plate 4 was left
closed and untouched.
Algae
Euglena
Mold
Tree
24. Which of the following is most
responsible for the decay of dead
organisms?
A)
B)
C)
D)
Mammals
Microorganisms
Nitrogen
Water
Where did the science teacher and
students probably find the largest
number of bacteria?
A)
B)
C)
D)
Plate 1
Plate 2
Plate 3
Plate 4
25. Why are decomposers helpful to the
food chain?
A)
B)
C)
D)
They provide nutrients for the soil.
They prey on carnivores.
They use photosynthesis to make food.
They are food for carnivores.
22. A lab investigation included examining
prepared slides of pond water. Singlecelled organisms with a nucleus and
either cilia or flagella were visible. These
organisms probably belong to which
kingdom?
A)
B)
C)
D)
Animalia
Fungi
Plantae
Protista
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26. A microbiologist tested four substances
to find out if they would kill certain types
of bacteria. The plate was first exposed
and then the substances were applied to
the plate. One week later, the scientist
recorded the results in the diagram
below.
Directions: Use the chart below to answer
the next question.
PREVENTING FOOD FROM SPOILING
Treatment
Temperature
Time
(ºC)
Preserved
Freezing
-16 to -29
2-3 months
Refrigeration
2 to 5
3-5 days
Pasteurization
70 to 72
1-2 weeks
Sterilization
100
1-2 years
27. According to this information, which
treatment can preserve food for more
than one year?
Which statement best describes the
growth of bacteria 2?
A)
B)
C)
D)
A)
B)
C)
D)
No growth on the plate.
Growth in only one section of the plate.
Growth in two sections of the plate.
Less growth than bacteria 3.
Freezing
Refrigeration
Pasteurization
Sterilization
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