Unit 1 Test Review

Homeostasis is the ability to maintain a

• stable internal environment.

• ecosystem.

• stable internet connection.

• temperature.

1. The _______ is the smallest unit of life.

• atom

• cell

• sand particle

• tiny house

A _________ is a sudden, automatic, and involuntary reaction to a stimulus

How many cells does a unicellular organism have?

• 3

• 2

• 100000

• 1

What are the 4 basic needs for life?

• water,oxygen,shelter,food

• water,food,doritos, shelter

• food,water,oxygen, energy

• homeostasis,movement,cells,food

What is spontaneous generation?

• Living things can appear out of non-living matter.

• Spontaneous thoughts from animals.

• Reproduction within a species.

How do biotic and abiotic factors work together in an ecosystem?

• They both influence each other.

• Abiotic factors have no impact on biotic factors.

• Biotic factors have no impact on abiotic factors.

How many cells do multicellular organisms have?

• 1

• 0

• 2+

What do biotic factors do inside of an ecosystem?

• They interact with other living organisms and their environment. 

• They interact with only abiotic factors.

• They don't do anything.

• They play elevator music.

Sexual reproduction requires how many parents?