Download Spontaneous Generation and the Discovery of the Cell

Mrs. Keadle JH Science
Name____________________________________ period _____
date assigned_____________ date due ______________ date returned _____________
Spontaneous Generation and the Discovery of the Cell
Using the information you read in “The Debate Over Spontaneous Generation” and “Discovery
of the Cell and Mitosis”, answer the following questions, and create a historical timeline.
All of the following are characteristics of both living organisms and cells
EXCEPT -
1
2
A
remove waste from themselves
B
being composed of complex cells
C
grow and die
D
extract energy from food
Ashley repeated Francisco Redi’s experiment for a spontaneous generation
project. She placed meat in two identical jars. She placed a stopper in the
top of one jar and left the other uncovered. After a few days, Ashley
observed young flies (maggots) on the meat in the open jar. There were
no flies in the sealed jar.
What hypothesis was Ashley trying to test?
F
Decaying meat produces maggots
G
Maggots prefer one type of meat over another.
H
Maggots need a certain temperature to appear.
J
Plastic wrap keeps meat from spoiling.
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Spontaneous Generation and the Discovery of the Cell
Mrs. Keadle JH Science
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5
Which invention most influenced
the development of the cell
theory?
4
Which of the following scientists
gave us a modern understanding
of cell reproduction (mitosis)?
A
Schleiden
F
centrifuge
B
Schwann
G
microscope
C
Virchow
H
thermometer
D
All of the above
J
spring scale
In all living things, the presence
of what structure supports the
cell theory.
A
Which factor contributed most to the
development of the cell theory?
F
The discovery of many new
species during the last century.
G
The development of technology
that can determine chemical
composition
H
The increase in knowledge about
rates of evolution.
J
The improvement in microscopes
over the last 200 years.
cell wall
B
cell membrane
C
vacuole
D
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chloroplast
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Spontaneous Generation and the Discovery of the Cell
Mrs. Keadle JH Science
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8
Living things contain units of structure
and function that come from
preexisting units. This statement best
describes the -
9
According to the cell theory, where did
this cell come from?
A
another living cell
A
cell theory
B
energy from the sun
B
lock-and-key model of enzyme
activity
C
a multicellular organism
D
the nonliving environment
C
concept of natural selection
D
heterotrophy hypothesis
Which statement represents an
exception to the cell theory?
F
All plants and animals are
composed of cells.
G
Cells arise from preexisting cells by
the process of mitosis.
H
Mitochondria and chloroplasts
contain genetic material and can
replicate.
J
The specialization of cells enables
an organism to function
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What type of cell has membranebound organelles?
F
eukaryotic cells
G
prokaryotic cells
H
both prokaryotic and eukaryotic
J
neither prokaryotic or eukaryotic
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Spontaneous Generation and the Discovery of the Cell
Mrs. Keadle JH Science
4
Spontaneous Generation and the Discovery of the Cell
Mrs. Keadle JH Science
Create a timeline using the articles. You can cut out and paste each block in the correct location on the timeline. You will tape the
two pages together to complete the timeline.
400 BC
0
1590 1665 –
1670
1740 1770
1832
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Spontaneous Generation and the Discovery of the Cell
Mrs. Keadle JH Science
6
Spontaneous Generation and the Discovery of the Cell
Mrs. Keadle JH Science
1838 1855
1860 1890
19301933
now
1953
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Spontaneous Generation and the Discovery of the Cell
Mrs. Keadle JH Science
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Spontaneous Generation and the Discovery of the Cell
Mrs. Keadle JH Science
Matthias Schleiden concluded
that all plant tissues are
composed of cells.
Theodore Schwann concluded
that all animal tissues were
made of cells.
Robert Hooke saw and described
cells for the first time.
Antony von Leeuwenhoek was
the first to describe protists and
bacteria. .
John Needham claimed that air had a life
force and could cause spontaneous
generation.
Lazzaro Spallanzani disagreed and repeated
Needham’s experiments but boiled the soup
longer and used truly sealed conatianers.
These statements were the
beginning of the cell theory
Zacharias Janssen creates the
first compound microscope using
lenses he created.
Francis Crick, James Watson, Maurice
Wilkins and Rosalind Franklin
simultaneously discover and describe
DNA for the first time.
Barthelemy Dumortier
observed the first evidence
of cell division in plants.
Francesco Redi challenged the
idea of spontaneous generation
using an experiment with meat
in sealed and unsealed
containers.
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Spontaneous Generation and the Discovery of the Cell
Mrs. Keadle JH Science
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Spontaneous Generation and the Discovery of the Cell
Mrs. Keadle JH Science
Leo Szilard, Ernst Rusk, and Max Knoll
design and build the first electron
microscope. This allows for much
higher magnification and unlocks a new
world in cell study
Walter Flemming was the first
scientist to study mitosis and
describe chromosomes.
Louis Pasteur ended the debate
over spontaneous generation
by using swan necked bottles
that would allow in oxygen but
not microbes in the air.
Robert Remak was able to
observe cell division in animal
cells.
Rudolf Virchow completed the
cell theory by stating that all
cells come from other cells.
The earliest descriptions
of spontaneous
generation date back to
at least the time of
Aristotle.
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Spontaneous Generation and the Discovery of the Cell