Download Bacteria and Protists WS

Name ____________________________
Date _________________ Period ______
Bacteria and Protists
Directions: Read pages 645 & 646 in your textbook. Use the information
in the text along with your class notes to answer the 10 questions below.
Please write the best answer on the line to the left.
_______ 1)
Below is a picture of the bacteria that causes anthrax - an infectious disease. By
looking at these bacteria, how would you classify them?
a) Coccus
b) Fungus
c) Bacillus
d) Pseudopod
_______ 2)
How are bacteria classified?
a) by how they move
b) by their shape
c) by how they get their food
d) by their color
Use the 2 paragraphs below to help you answer questions # 3 and 4.
Plants and animals are multicellular organisms (they are made of more than one cell). For a
long time, scientists tried to classify unicellular organisms (made of only ONE cell) that have a
nucleus as either a single-celled plant or a single-celled animal. One group of unicellular
organisms with a nucleus, Euglenas, was particularly difficult to classify. These tiny organisms
can be found living in most ponds. What is puzzling about Euglenas is that they have
characteristics of both plants and animals.
Some scientists argued that Euglenas are more like plants because many of them have
chloroplasts. Chloroplasts are cellular structures that enable both plants and Euglenas to
capture energy from the Sun and make their own food. Other scientists argued that Euglenas
are more like animals because they can take in food particles from the water. Euglenas also
have flagella which are tail-like structures that enable them to swim. The Euglena even has an
eyespot for sensing light.
_______ 3)
In what way are Euglenas DIFFERENT from both plants and animals?
a) They are single-celled
b) They get energy from food
c) They have no nucleus
d) They live in ponds
_______ 4)
Having flagella makes Euglenas similar to animals because it allows Euglenas to
do what?
a) Make food
b) Make energy
c) Move around
d) Sense light
_______ 5)
If I wanted to find a protist, where would be the best place to look?
a) a doorknob
b) a pond
c) in the air
_______ 6)
The diagram above illustrates some of the major structures of a paramecium.
Which of the following best classifies a paramecium?
a) Bacteria
b) Protist
c) Plant
d) Animal
_______ 7)
What is the function of the cilia on the paramecium?
a) Movement and catching food
b) Digestion
c) Reproduction and getting rid of waste
d) Fighting disease
_______ 8)
True or False: Bacteria and Protists are both part of the animal kingdom.
a) True
b) False
_______ 9)
What does the amoeba, pictured to the right, use to move
and catch its food?
a) cilia
b) flagella
c) pseudopods
d) all of the above
10) Name at least one way in which bacteria and protists are different.
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