2. Ch 1 sect 3 and 4.notebook August 16, 2011
WHERE DOES LIFE COME FROM?
Spontaneous Generation the idea that living things come from nonliving things.
This idea is false.
Animation
Redi’s Experiment
Before the 1700’s, people thought that living thing, like flies, were produced by
meat (a nonliving thing). Francesco Redi did an experiment to prove this was
NOT true. The maggots (baby flies) were produced by eggs that adult flies laid on
the meat. In the jars that were covered, there were NO maggots on the meat.
Biogenesis says that living things come only from other living things. This is
what we know is true today.
Earth is approximately 4.6 billion years old. Scientists have found fossils of
organisms that are more than 3.5 billion years old.
How did life begin on Earth?
Oparin’s hypothesis explains how the first life possibly formed on Earth
Gases, mixed with electricity, formed
a liquid that contained amino acids,
which are a necessary chemical for
life.
Oct 89:45 AM
2
5. Ch 1 sect 3 and 4.notebook August 16, 2011
lima bean black bean, navy bean
sunflower seed popcorn seed, kidney bean
Group #1 has white color, Group #2
does not have white color.
seed class. lab
5
8. Ch 1 sect 3 and 4.notebook August 16, 2011
Notes Chapter 1, Section 4
Classification
A .. Early classification of Living Things
Aristotle (Greek philosopher) classified
organisms in many ways:
• plants + animals
. animals with and without hair
. with and without blood.
B. classified Today
Since the 1700's, scientists have
classified by the similar structures
of organisms
external and internal
flower
structure number of chromosomes
scientists also use the evolutionary
history of an organism for classifying.
phylogenythe history of how a
species has changed over time.
NOTES
8
9. Ch 1 sect 3 and 4.notebook August 16, 2011
Notes Chapter 1, Section 4
Classification
A .. Early classification of Living Things
Aristotle (Greek philosopher) classified
organisms in many ways:
• plants + animals
. animals with and without ______
. with and without _______.
B. Classification Today
Since the 1700's, scientists have
classified by the similar _______
of organisms
external and internal
flower
structure number of _______________
scientists also use the evolutionary
history of an organism for classifying.
____________the history of how a
species has changed over time.
NOTES
9
10. Ch 1 sect 3 and 4.notebook August 16, 2011
C. Six Kingdoms
largest groups for classifying organisms
. Animal
. plant
. Fungi
. Protist
• Eubacteria
• Archeobacteria
D. Species a specific Kind of organism, such as
humans, that can reproduce with other members of
that species.
E. Scientific Names
all organisms have a 2 part scient.
name that is similar in all languages
and that tells something important
about that species.
ex: humans are homo sapiens
Notes p. 2
10
11. Ch 1 sect 3 and 4.notebook August 16, 2011
C. _____ Kingdoms
largest groups for classifying organisms
. Animal
. plant
. ______
. _______
• _______________
• _______________
D. Species a specific Kind of organism, such as
humans, that can ________with other members of
that species.
E. Scientific Names
all organisms have a _____ part scientific
name that is similar in all languages
and that tells something important
about that species.
ex: humans are ______ ______
F. ______________ Key
a group of ___________to help identify
the species of an organism, and
classify the organism.
Notes p. 2
11
12. Ch 1 sect 3 and 4.notebook August 16, 2011
F. Dichotomous Key
a group of questions to help identify
the species of an organism, and
classify the organism.
Oct 141:20 PM
12
13. Ch 1 sect 3 and 4.notebook August 16, 2011
F. ______________ Key
a group of ___________to help identify
the species of an organism, and
classify the organism.
Oct 141:20 PM
13
30. Ch 1 sect 3 and 4.notebook August 16, 2011
Practice from large textbook, p. 3233.
Answer all of the questions on page
32, except #'s 2, 4, 6, 9, 10, 20.
On p. 33, answer only #'s 23 and 25
textbook practice
30
31. Attachments
The_Basics_of_Biology__How_Living_Things_Are_Classified.asf
Classification_of_Living_Things 5 min clip.asf
online review questions