Unicellular Organisms - Section 2.1 Quiz

Welcome to another ScienceSource practice quiz!
Pick the best answer for each question.
Your score will decrease with every wrong guess. If you guess wrong 3 times on a question, you will receive no points.
Get every answer correct the first time to score 100%. Good luck!
If you wish to try the quiz again, just click the "reload" button in your browser.

Home | Back to Unit A

When you have completed the quiz, your score will appear here--->

Which statement about unicellular organisms is true?
1. Unicellular organisms carry out many of the same activities as multicellular organisms
2. Unicellular organisms all have the same basic structure
3. Unicellular organisms are most often larger than the tip of a pen
4. Unicellular organisms can only survive in warm dry environments
Phytoplankton are small unicellular _____ organisms.
1. plant
2. fungi
3. animal-like
4. decomposer
Which unicellular organism is an animal?
1. Paramecium
2. Diatom
3. Phytoplankton
4. Yeast
What is not a method by which unicellular organisms can move?
1. Limb
2. Pseudopod
3. Flagellum
4. Cilia
What does the word pseudopod mean?
1. "False foot"
2. "Hidden arm"
3. "Multi-limbed"
4. "Soft bodied"
Which microorganism best fits the following list of clues?

They are typically only a few millimeters in length.
Their shapes range from rods to spheres to spirals.
They live in every habitat on Earth.
They are vital in recycling nutrients.
There are approximately ten times as many of these are there are cells in the average human body.
1. Bacterium
2. Paramecium
3. Phytoplankton
4. Diatom
Which microorganism best fits the following list of clues?

This is a microphotograph of one:

The extensions you see in the microphotograph are called pseudopods.
It lives in watery environments.
It is a predator.
1. Amoeba
2. Paramecium
3. Euglena
4. Bacterium
How does an amoeba digest its food?
1. It engulfs it in a vacuole, which is full of enzymes
2. It gnaws on its prey with teeth-like cell membrane extensions
3. It breaks down its prey's proteins for re-use, in its endoplasmic reticulum
4. It digests its food in its stomach-like chloroplasts
This is a microphotograph of which microorganism?
1. Euglena
2. Paramecium
3. Bacterium
4. Amoeba
What enters an amoeba through the process of osmosis?
1. Water
2. Prey
3. Oxygen
4. Glucose