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Endosymbiosis & Early Earth

Total questions: 16

Worksheet time: 8mins

Name
Class
Date
1.
The theory of Endosymbiosis explains
a)
The origin of eukaryotes
b)
How species develop
c)
How bacteria live
d)
Why cells rely on one another
2.
____________ & _________________ are organelles that definitely arose from endosymbiosis.
a)
Rough ER & Smooth ER
b)
Mitochondria & Flagellum
c)
Chloroplast & Mitochondria
d)
Chloroplast and Golgi apparatus
3.

In this diagram, the endosymbiont (prokaryote being engulfed) is

a)

blue

b)

green

c)

purple

4.
"Endosymbiosis" means
a)
Living together
b)
Living inside
c)
Entering together
d)
Joining together
5.
Which of the following was probably not present in the atmosphere of the primitive Earth? 
a)
Methane
b)
Oxygen
c)
Water
d)
Carbon dioxide
6.
Based upon the conditions of the early Earth, which forms of live most likely appeared first?
a)
Prokaryotic and aerobic
b)
Prokaryotic and anaerobic 
c)
Eukaryotic and aerobic
d)
Eukaryotic and anaerobic
7.
What process is shown within this diagram?
a)
Natural selection
b)
Endosymbiosis
c)
Chemical evolution
d)
Abiogenesis
8.
Which statement best describes conditions on early Earth?
a)
hot with volcanic activity and electrical storms
b)
dry land covered with volcanic dust
c)
cold oceans
d)
dark and dusty with abundant water
9.
Early Earth had no:
a)
atmosphere
b)
landmass
c)
ozone layer
d)
cyanide within the atmosphere
10.
Which question were the scientists trying to answer with this experiment?
a)
Where do cells come from?
b)
What came first the chicken or the egg?
c)
How are biomolecules formed?
d)
What gave rise to the Eukaryotic cell?
11.
The apparatus in the experiment was used to mimic what?
a)

proteins

b)

Earth's present conditions

c)

early Earth's conditions

d)

they didn't mean to mimic anything in particular

12.
The electrical sparks mimicked?
a)

heat waves

b)

lightening

c)

volcano

d)

hurricane

13.
The water used in the apparatus was used to mimic what part of early Earth?
a)

sea

b)

swimming pool

c)

ocean

d)

rain

14.
What was the result of the Miller-Urey Experiment?
a)
amino acids
b)
nucleotides
c)
lipids
d)
glucose
15.

The diagram shows a proposed theory of the origin of eukaryotic cells, called endosymbiosis.

Which of the following explains why cells that contained mitochondria-like organelles had an evolutionary advantage?

a)

They were able to photosynthesize

b)

They had more DNA

c)

They were able to make more use of available energy

d)

They were immune to bacterial invasion.

16.

How are mitochondria and chloroplasts like bacteria cells?

a)

They divide by meiosis

b)

They contain their own DNA

c)

They have the same membrane-bound organelles

d)

They can make their own food

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