NEW
Font size
S
M
L
XL
WorksheetsLOE 1
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
About how many years ago do scientists suggest Earth cooled enough for water vapor to condense?
a)
20 million years ago
b)
4.4 million years ago
c)
4.6 billion years ago
d)
65 billion years ago
2.
Scientist theorize that oxygen buildup in the atmosphere resulted from _________________ .
a)
respiration
b)
photosynthesis
c)
chemosynthesis
d)
rock weathering
3.
What were Earth's first living organisms?
a)
Photosynthetic eukaryotes
b)
Photosynthetic prokaryotes
c)
Anaerobic prokaryotes
d)
Anaerobic eukaryotes
4.
TRUE OR FALSE: Life started on Earth 3.5 billion years ago.
a)
True
b)
False
5.
Which type of cell came first?
a)
Eukaryotic
b)
Prokaryotic
c)
Protists
d)
Both Eukaryotic and Prokaryotic were about the same
6.
Which organelles were thought to be previously prokaryotic cells?
a)
chloroplasts
b)
mitochondria
c)
plastids
d)
all of the above
7.
Mass extinctions have lead to
a)
more species diversity
b)
less species diversity
c)
no change in diversity
8.
True or False. Miller and Urey were able to synthesize complete cells from only basic carbon compounds.
a)
True
b)
False
9.
Which of these was NOT in the atmospere during the precambrian era?
a)
Methane
b)
Carbon dioxide
c)
Oxygen
d)
Nitrogen
10.
The gasses used in the Miller Urey experiment were
a)
Water Vapor, CH4, NH3, Hydrogen
b)
Amonium, CH4, H20, H2
c)
NH2, Hydrogen, Methane, H20
d)
H2, NH4, Water Vapor, CH3
11.
Scientists believe that the ________ ________ may have been flawed
a)
gas composition
b)
ocean water
c)
electric spark
d)
amino acid
12.
In the experiment, what did the electric spark simulate?
a)
Clouds
b)
Fire
c)
Eureka
d)
Lightning
13.
The water in the swan-neck flask acted as the ______
a)
Rain
b)
Puddle
c)
Ocean
d)
River
14.
________ was found in the cooled water sample.
a)
Proteins
b)
Amino Acids
c)
Candy
d)
Blood
15.
What is the BIGGEST criticism for Panspermia?
a)
The theory does not address where life came from, only that it did not come from Earth
b)
Evidence is mostly based in experiments and studies
c)
There have been no mathematics to back it up
Reset
