Microorganisms

Most microorganisms cannot be seen without a...

• microscope

• magnifying lens

• telescope

• x-ray machine

nonmotile

• describes microorganisms not capable of movement

• unable to move or be moved

•  a scene of noisy confusion and movement

• having no desire to act or to move ahead

All living organisms animals, plants, microorganisms, ecosystems in lands, oceans and rivers are the...

• Atmosphere

• Biosphere

• Hydrosphere

• Geosphere

Which observation supports the claim that microorganisms are helpful to ecosystems?

• Microorganisms are too small to be seen without special equipment.

• Microorganisms need water and energy.

• Microorganisms can be found everywhere, even in the soil.

• Microorganisms break down dead plants and animals.

Microorganisms play a crucial role in the nitrogen cycle by...

• A) Fixing nitrogen in the soil

• B) Producing oxygen

• C) Absorbing carbon dioxide

• D) Breaking down rocks

Which of the following is a beneficial use of microorganisms in food production?

• A) Spoiling food

• B) Fermenting dairy products

• C) Causing foodborne illnesses

• D) Decomposing waste

In which environment are extremophiles, a type of microorganism, most likely to be found?

• A) Deserts

• B) Deep ocean vents

• C) Forests

• D) Grasslands

What is the primary role of microorganisms in the human gut?

• A) Causing infections

• B) Aiding digestion

• C) Producing toxins

• D) Absorbing nutrients

Which microorganism is commonly used in the production of antibiotics?

• A) Viruses

• B) Bacteria

• C) Algae

• D) Fungi

How do microorganisms contribute to the carbon cycle?

• A) By producing carbon dioxide during respiration

• B) By absorbing sunlight

• C) By forming fossil fuels

• D) By creating ozone