Welcome to your B7 Quiz 10.2 – Endosymbiose & Vielzelligkeit

1. 
According to the theory of endosymbiosis, how did complex cells with cell organelles arise?

2. 
Fill in the blank:

The relationship between the absorbed cell and the host cell, in which both benefit, is called .

3. 
Cyanobacteria (blue-green bacteria) still exist today.

4. 
Fill in the blank:

Cyanobacteria could perform and so enriched the oceans and the air with oxygen.

5. 
Why was the oxygen released by cyanobacteria important for the development of more complex organisms?

6. 
Fill in the blank:

The first multicellular organisms formed when single cells joined together into multicellular .

7. 
Compared to single cells, multicellular organisms could access new sources of food and were better protected from predators.

8. 
Fill in the blank:

An example of a multicellular organism that developed from the fusion of single cells is the alga .

9. 
According to the coursebook, what is an "organism"?

10. 
Fill in the blank:

is the ability of an organism, or part of it, to change position or place.

11. 
All organisms are able to move their whole body from place to place.

12. 
Fill in the blank:

The characteristic that describes organisms picking up information about changes in their environment and reacting to them is called .

13. 
Which characteristic describes organisms producing unwanted or toxic waste products that must be removed from the body?

14. 
Fill in the blank:

Breaking down glucose and other substances inside cells to release usable energy is called .

15. 
In the workbook plant diagram, photosynthesis uses carbon dioxide to make glucose and releases oxygen.

16. 
Fill in the blank:

Being able to make new organisms of the same species is called .