Yr7 B1.5 Unicellular organisms

What is a unicellular organism?

• An organism made of many cells

• An organism made of only one cell

• An organism that cannot move

What is the function of the food vacuole in an amoeba?

• It stores energy from the Sun

• It digests food that the amoeba engulfs

• It helps the amoeba move

How do amoebas reproduce?

• They lay eggs

• They split into two cells through binary fission

• They form spores that grow into new amoebas

What structures do both animal cells and amoebas have?

• Cell wall and nucleus

• Cell membrane and nucleus

• Chloroplast and mitochondria

How does an amoeba move?

• By using cilia to push itself forward

• By changing its shape and extending parts of its body called pseudopods

• By spinning its flagellum like a propeller

What makes euglena different from an amoeba?

• Euglena can photosynthesize using chloroplasts

• Euglena can change its shape

• Euglena engulfs its food just like an amoeba

What is the function of the flagellum in euglena?

• To help it move towards light

• To help it engulf food

• To trap energy from the Sun

How do both amoebas and euglenas reproduce?

• Through binary fission

• By producing seeds

• By dividing into three cells

Why do amoebas need to find food to survive?

• They do not have chloroplasts and cannot photosynthesize

• They store energy from the Sun instead

• They can survive without eating anything

What is the function of the eye spot in euglena?

• It helps detect food

• It helps detect light for photosynthesis

• It helps with movement