Extra 7 - Single celled organisms

2.7 - Single-celled organisms
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Slide 1: Slide
BiologieMiddelbare schoolvwoLeerjaar 1

This lesson contains 11 slides, with text slides and 3 videos.

time-iconLesson duration is: 45 min

Items in this lesson

2.7 - Single-celled organisms

Slide 1 - Slide

Single-celled organisms
Organisms that consist of 1 cell -> very small

All life characteristics:
Breathing; To feed; Excrete; Observe; To move; Reproduction; To grow.

Examples: amoeba and paramecium (pantoffeldiertje)

Slide 2 - Slide

Amoeba
a=no/none, moebe=form

Movement of the amoeba
by means of pseudopod 
(schijnvoetjes)

Slide 3 - Slide

Amoeba
Pseudopod  moves towards food (bacterium).
Bacteria are enclosed and absorbed into the cell in a vesicle: food vacuole.
Bacterial digestion takes place here -> digested substances move to cytoplasm.
Undigested substances -> Away via cell membrane.

Slide 4 - Slide

Slide 5 - Video

Slide 6 - Video

Paramecium 
Het Pantoffeldiertje

Slide 7 - Slide

Paramecium
Cilia on cell membrane make wavy movement in water -> movement
Cilia move food towards the cell mouth pore. 
From there into food vacuole
undigested remains are removed via anal pore. 

Slide 8 - Slide

Slide 9 - Video

Begrippen:
Single-celled organism
amoeba
pseudopod
paramecium
food vacuole
cilia
mouth pore
anal pore

Slide 10 - Slide

Questions?
Read 2.7 - Single-celled organisms
Do Qs 1 and 2

Slide 11 - Slide