Microorganism Answers to Study Guide

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The Good and Bad of

Microorganisms

Question Packet

1 - What is a

Microorganism?

*A microorganism is a living thing that can only be seen with the aid of magnification.

2- All microorganisms are ________

___________ or ______________ living things or organisms

3- Explain what unicellular or single-celled means.

Single-celled means any living thing that has only one cell, the smallest unit of life.

4- Some microorganisms are ____, living things that make their own _____ from simple substances usually using ___, as plants do.

Some microorganisms are PRODUCERS, living things that make their own FOOD from simple substances usually using SUNLIGHT , as plants do.

5- Most microorganisms do not cause _________ and many are ___________.

DISEASE

HELPFUL

6- How are Microorganisms classified?

Microorganisms are classified by the microorganisms' shape, structure, how they get food, where they live and how they move.

7- What are the microorganisms we are studying in this unit?

Bacteria, Fungi, and Protists

8- Give the definition of bacteria.

Bacteria are microscopic, single-celled organisms that exist all around you and inside you.

9- How do we depend on bacteria?

We depend on bacteria to help in the digestion of food, for plant growth, and to help us make foods and medicines.

10- _____, bacteria and fungi feeding on breaking down plant matter.

DECOMPOSERS

11- When bacteria break down the ____ _____, they release substances that can be used by other _____ in the ______.

When bacteria break down the DEAD ORGANISMS , they release substances that can be used by other

ORGANISMS in the ECOSYSTEM .

12- Where in our bodies do bacteria always live?

Bacteria are found in digestive systems and help digest food.

13 – What foods have bacteria?

YOGURT AND CHEESE

Bacteria are the smallest

________.

MICROORGANISMS

15 – What is required to see bacteria?

To see bacteria as a single organism, requires a microscope with very high magnification.

16 – Bacteria live in ___

___ ___ ____ _____.

Bacteria live in almost every place on Earth.

17- Scientists can ____, grow microorganisms in a specially prepared ______ ________.

Scientists can CULTURE , grow microorganisms in a specially prepared NUTRIENT MEDIUM.

18- WHAT ARE FUNGI?

Fungi are organisms that are neither plant nor animal, yet have characteristics of both, and absorb food from whatever source they are growing on.

19- A COMMON FUNGUS

IS A_______.

MUSHROOM

20- Mushrooms cannot make

_____ _____ _____ and must live on a _____ _____.

Mushrooms cannot make THEIR OWN

FOOD and must live on a FOOD SOURCE .

21- What is another type of fungus?

Another fungus, yeast, is used to make bread rise and give it flavor.

22-Fungi like ____ ____ places to grow.

WARM MOIST

23- Protozoans are____________.

Protozoans are microscopic organisms that usually live in water.

24- Protozoans move through the water with tiny _____ _____ ____

____.

Protozoans move through the water with tiny HAIR-LIKE ARMS CALLED CILIA.

25- Protozoans eat ___ and _________.

Protozoans eat BACTERIA and

MOLD .

26-Why is it not a good idea to drink water from a stream?

Streams sometimes contain a protozoan called Giardia that can make you sick.

Algae are _________.

Algae are a type of protist that usually live in water and can produce their own food.

28- List the colors that algae can be.

Algae can be red, brown, yellow or green.

29- Algae can grow up to ________.

60 meters

30- Algae is an important part ____ ____ _____ _____.

Algae are an important part OF THE

OCEAN’S ECOSYSTEM

31- ALGAE PROVIDE FOOD

FOR ______________.

fish, whales and many other sea animals.

32- WHAT PROVIDE HALF OF

THE OXYGEN ON EARTH?

Phytoplankton

Thank you, thank you very much!

Love those microbes!

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