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WorksheetsOrigins of Life
Total questions: 18
Worksheet time: 9mins
Name
Class
Date
1.
Which question were the scientists trying to answer with this experiment?
a)
Where do cells come from?
b)
How did prokaryotes form cell membranes?
c)
How are biomolecules formed?
d)
What gave rise to the Eukaryotic cell?
2.
The apparatus in the experiment was used to mimic what?
a)
Proteins
b)
Present Earth conditions
c)
Early Earth conditions
d)
Nucleic acids (DNA/RNA)
3.
This experiment was conducted by the scientists:
a)
Stanley Miller and Harold Urey
b)
Harold Urey and Albert Einstein
c)
Louis Pasteur and Francesco Redi
d)
James Watson and Francis Crick
4.
Miller/Urey and other scientists have shown that:
a)
Life on early Earth required material from space
b)
Cells survived in the primitive atmosphere
c)
Amino acids could be produced from inorganic molecules
d)
Simple cells can be produced in a laboratory
5.
The idea that Earth's early oceans had organic molecules that became the first life is called the...
a)
Primordial soup hypothesis
b)
Bubble hypothesis
c)
Miller-Urey Experiment
d)
Radioactive dating theory
6.
Earth formed 4.5 billion years ago, but life did not show until around...
a)
3.5 billion years ago
b)
1 million years ago
c)
200,000 years ago
d)
4.2 billion years ago
7.
Which of the following was probably not present
in the atmosphere of the primitive Earth?
a)
methane
b)
oxygen
c)
water
d)
carbon dioxide
8.
The smallest unit which can be considered life is
called __________.
a)
a prokaryote
b)
a LUCA
c)
a cell
d)
a phospholipid
9.
Which 'building block of life' was NOT made in the Miller Urey experiment?
a)
amino acids
b)
nucleic acids
c)
sugars
d)
lipids
10.
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
11.
Which of the following describes what the first life form resembled?
a)
Eukaryotes
b)
Plants
c)
Bacteria
d)
Fungi
12.
Cells without a nucleus are said to be _____________________.
a)
Eukaryotic
b)
Prokaryotic
13.
Which of the following supports the hypothesis of an “RNA world” on early Earth?
a)
Some
RNA molecules are important catalysts in modern cells.
b)
The oldest known fossils contain trace
amounts of RNA.
c)
Single-stranded RNA molecules are
linear and do not form three-dimensional shapes.
d)
RNA is the primary genetic material of
many viruses.
14.
Why do some scientists believe that RNA, rather than DNA, was the first genetic material?
a)
RNA probably mutated
into DNA
b)
RNA
has both information storage and catalytic properties.
c)
RNA can replicate more accurately than
DNA.
d)
RNA contains uracil in place of
thymine.
15.
RNA World Theory states that ...
a)
Life came from RNA
b)
Life came from life
c)
Life came from non living things
d)
Life came from outer space
16.
Which of these are the ingredients NEEDED for life to form?
a)
organic macromolecules
b)
atoms
c)
methane
d)
inorganic molecules
17.
What molecule essential for life is missing in 'protobionts'?
a)
Carbohydrates
b)
Nucleic acids
c)
Amino acids
d)
Lipids
18.
What are 'protobionts'?
a)
A collection of organic molecules surrounded by a lipid membrane
b)
Building blocks of lipids
c)
Complex catalysts that existed on early Earth
d)
Abiotic polymers
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