Microorganisms

Why are bacteria necessary to life?

• used in nitrogen fixation
• they are decomposers
• they help human digestion
• all of these

Tags

NGSS.MS-LS2-3

Nitrogen-fixing bacteria are important because...

• they are decomposers
• they are salt lovers
• they provide protection for plants from diseases
• they make nitrogen available to plants in form they can use

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

All viruses contain this.

• nucleus and DNA or RNA
• DNA or RNA and protein coat
• protein coat and nucleus
• cell wall and DNA or RNA

This microorganism is shaped like a slipper

• Amoeba
• Paramecium
• Euglena
• Volvox

Which of the following help bread rise?

• algae
• bacteria
• yeast
• fungi

Tags

NGSS.MS-LS1-7

How do bacteria help our bodies function?

• They make our muscles stronger.
• They help to digest food.
• They circulate in our blood and help carry oxygen.
• They make our skin clean.

Which instrument would you use to study microorganisms?

• thermometer
• microscope
• telescope
• kaleidoscope

In what conditions do  most bacteria grow best?

• warm and moist
• cool and dry
• warm and dry
• cool and moist

Tags

NGSS.MS-LS1-5

A disease causing organism

• pathogen
• poison
• vaccine

A disease in human beings caused by virus is _______.

• typhoid

• dysentry

• influenza

• cholera