1. Origin & Diversification of Eukaryotes
Created by Educational Technology Network

2. Endosymbiosis
Multicellularity
Supergroups
Ecology & Humans
Connect the Ideas 10 10 10 10 10 20 20 20 20 20 30 30 30 30 30 40 40 40 40 40

3. Endosymbiosis – 10 Points
QUESTION:
Name two organelles that endosymbiosis pertains to.
ANSWER:
Mitochondria and Chloroplasts

4. Endosymbiosis– 20 Points
QUESTION:
Which of the following does not support the endosymbiotic theory?
Mitochondria have:
Enzyme transport systems homologous to that of a prokaryote
DNA that is linked to the nuclear DNA of the eukaryote
own DNA and system (ribosomes) to transcribe and translate it
Ribosomes more similar to prokaryotes than eukaryotes
ANSWER: B - DNA that is linked to the nuclear DNA of the eukaryote

5. Endosymbiosis– 30 Points
QUESTION:
True or False? Secondary endosymbiosis is the process in which a heterotrophic eukaryotic cell engulfed a photosynthetic eukaryotic cell.
ANSWER:
True

6. Endosymbiosis– 40 Points
QUESTION:
DNA sequence data suggest that eukaryotes are __________ organisms.
Complex
Multifaceted
Compartmental
Combination
ANSWER:
D) Combination

7. Multicellularity – 10 Points
QUESTION:
True or False: Multicellularity has only originated one time.
ANSWER:
False

8. Multicellularity – 20 Points
QUESTION:
The first multicellular forms were ______________, collections of cells that are connected to one another but show little or no cellular differentiation.
Colonies
Pods
Organisms
Prokaryotic Packs
ANSWER:
a) Colonies

9. Multicellularity – 30 Points
QUESTION:
Virtually all specialized cells of multicellular organisms:
A) develop through mutation from less specialized cells of the organism.
B) contain more genetic material than less specialized cells of the same organism.
C) contain less genetic material than less specialized cells of the same organism.
D)have the same amount of DNA and the same number of chromosomes as all other cells of the organism. 
ANSWER: D) have the same amount of DNA and the same number of chromosomes as all other cells of the organism. 

10. Multicellularity – 40 Points
QUESTION:
Does genetic analysis suggest that a transition to multicellularity required the origin of a large number of novel genes or changes in how existing genes are used?
ANSWER:
Multicellularity resulted from changes in how existing genes are used.

11. Supergroups – 10 Points QUESTION: ANSWER:
Stramenopiles, alveolates, and rhizarians make up which supergroup?
ANSWER:
“SAR” Clade

12. Supergroups – 20 Points QUESTION: ANSWER:
True or False: The root of the eukaryotic tree is known.
ANSWER:
False

13. Supergroups – 30 Points QUESTION: ANSWER:
Tracing of the occurrence of a rare evolutionary event suggests the _______________ were the first eukaryotes to diverge from other eukaryotes.
ANSWER:
Unikonts

14. Supergroups – 40 Points QUESTION: ANSWER:
Are most organisms in the eukaryotic supergroups multicellular or unicellular?
ANSWER:
Unicellular

15. Ecology and Humans – 10 Points
QUESTION:
True or False? Unicellular protists are complex organisms that use subcellular organelles to accomplish biological tasks.
ANSWER:
True

16. Ecology and Humans – 20 Points
QUESTION:
___________________ are a group of alveolates that includes protists which cause serious human diseases such as malaria.
ANSWER:
Apicomplexans

17. Ecology and Humans – 30 Points
QUESTION:
How does the parasite enter the human host?
ANSWER:
Sporozytes

18. Ecology and Humans – 40 Points
QUESTION:
Why do factors affecting producers hold such great impact on the other species of the community?
ANSWER:
They are at the base of the food web.

19. Making Connections – 10 Points
QUESTION:
Most fungus go through meiosis in which timing pattern?
ANSWER:
Alternation of Generations

20. Making Connections – 20 Points
QUESTION:
Double Jeopardy! Free 20 pts… if you go study the other chapters and make connections.
ANSWER: 

21. Making Connections – 30 Points
QUESTION:
Biologists think that endosymbiosis gave rise to mitochondria before plastids partly because…
Products of photosynthesis could not be metabolized without mitochondrial enzymes
All eukaryotes have mitochondria, but not all have plastids
Mitochondrial DNA is less similar to prokaryotic DNA than is plastid DNA
Without Carbon Dioxide production, photosynthesis could not occur
ANSWER:
b) All eukaryotes have mitochondria, but not all have plastids

22. Making Connections – 40 Points
QUESTION:
How does the endosymbiotic theory relate to natural selection?
ANSWER:
When the host engulfed a chloroplast or mitochondria, it was situated in a world that was becoming increasingly aerobic. It found that endosymbiosis allowed it to make use of oxygen, which subsequently proved to be a beneficial adaptation.