Year 7 Unicellular Organisms

How many cells is a unicellular organism made up of?

• 1

• 2

• 10

• 100

What is a unicellular organism?

• Plant cell

• Animal cell

• Both

• None

Is an amoeba a unicellular organism?

• Yes

• No

An amoeba looks like a blob of jelly

• True

• False

Where can an amoeba be found?

• Fresh water

• Salt water

• Wet soil

• Inside animals

Does an amoeba have a nucleus?

• Yes

• No

What does an amoeba have?

• a cell membrane

• chloroplasts

• a cell wall

• cytoplasm

How does an amoeba...

• Move

• By splitting itself into two cells- known as binary fission. The nucleus divides first, then the cytoplasm, forming two identical cells

• Reproduce

• By surrounding tiny particles of food and forming a food vacuole- known as engulfing. The food vacuole digests food

• Eat

• By changing the shape of their body. They can make part of their body move in the direction they want to travel, and the rest of the cell follows