3.2

What kind of micro-organism does a baker add to bread dough to make it rise?

• Phytoplankton

• Yeast

• Penicillin

Which kind of micro-organism turns milk into yogurt?

• Bacteria

• Phytoplankton

• Algae

Viruses are considered to be nonliving because they 

• cannot multiply

• use energy to grow 

• are smaller than bacteria

• do not show all the characteristics

This Wood ear mushroom get its food from the ______________________.

• sun

• tree log

• water

• soil

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

List the steps of the scientific method

d

e

f

c

b

a

Ask a question

Communicate results

Conduct experiment

Form a hypothesis

Analyze results

Draw conclusions

Tags

NGSS.MS-PS2-2

Which letter represents amplitude? (a)  

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS4-1

Which is a true statement?

• All microorganisms are harmful.

• All microorganisms are beneficial.

• Some microorganisms are harmful while others are beneficial.

• Microorganisms are beneficial only to humans.

What is the organism pictured here?

• virus

• protozoa

• bacteria

• fungus

Tags

NGSS.MS-LS1-1

Most microscopic fungi are a tangle of thin threads called _________.

• hyphae

• yeasts

• specimen

• nucleus

The process in which nitrogen circulates and is recycled is called

• The nitrogen cycle

• The carbon cycle

• The water cycle

• The phosphorus cycle