life science powerpoint

1. LIFE
SCIENCE
INTRODUCTION TO LIFE SCIENCE
MARK O. AGUSTIN, LPT

2. The Evolving Concept of
Life
Lesson 1
Classical Experiments to
first life
Lesson 2
Early Forms of Life
Lesson 3
Unifying Themes in the
Study of Life
Lesson 4
CONTENT

3. The
Evolving
Concept of
Life
LESSON 1

4. FOSSILS( MICROFOSSIL
S)
CYANOBACTERIA
3.5 BILLIONS YEARS
AGO
PROKARYOTES
ATMOSPHERE
DISCOVERY
OF THE
SCIENCTIST
EARLY STAGE OF EARTH
ANAEROBIC
EVOLVING OF
UNICELLULAR TO
MULTICELLULAR
ORGANISM

5. RESPONSE TO THE
ENVIRONMENT
MADE UP OF CELLS
HOMEOSTASIS
GROW AND DEVELOP
REPRODUCTION
METABOLISM
CHARACTERISTIC
OF
ORGANISMS
f

6. THE CONCEPT OF
DIVINE CREATION IS
THAT ALL LIFE
FORMS EXISTING
TODAY HAVE BEEN
CREATED BY A
SUPREME BEING.
CREATION
THEORY

7. ALSO KNOWN AS
“SPONTANEOUS
GENERATION” IS
THE IDEA THAT LIFE
COULD APPEAR
FROM A NON-
LIVING MATERIAL.
ABIOGENESIS
THEORY

8. greek philosopher in
the 6h Century BCE.
Anaximander Aristotle The History
of Animals
spontaneous
generation
adapted and
expanded
Anaximander’s idea.
some organisms
appeared from
inanimate object
spontaneously.
a process thast
transmuted lifeless
object to living
oganisms by
supernatural means
ABIOGENESIS

9. STATES THAT LIFE
CAN ONLY COME
FROM LIFE, AND IT
REFERS TO ANY
PROCESS BY WHICH
A LIFEFORMS CAN
GIVE RISE TO OTHER
LIFEFORMS.
BIOGENESIS
THEORY

10. ALSO CALLED AS
“EXOGENESIS”. THIS
SUGGESTED THAT
BUILDING BLOCKS OF
LIFE CAME FROM
ANOTHER PLANET.
THEORY of
PANSPERMIA
FRED HOYLE

11. STATES THAT THE
VENTS PROVIDE AN
IDEAL ENVIRONMENT
WITH ALL THE
INGREDIENTS
NEEDED FOR
MICROBIAL LIFE RO
EMERGE.
DEEP SEA
HYDROTHERMAL
VENT THEORY

12. STATES THAT LIFE
STARTED IN A
PRIMORDIAL SOUP OF
ORGANIC MOLECULES.
SOME FORM OF ENERGY
FROM LIGHTNING
COMBINED WITH THE
CHEMICALS IN THE
ATMOSPHERE TO MAKE
THE AMINO ACIDS
PRIMORDIAL
SOUP
THEORY

13. STATES THAT CHANGES
OCCUR AT THE
MOLECULAR LEVEL IN
ORGANISM OVER A
PERIOD OF TIME.
THEORY OF
BIOCHEMICAL
EVOLUTION

14. Classic
Experiments
on the
Evolution of
Life
LESSON 2

15. FRANCISCO
REDDI’S
EXPERIMENT 1. How do you describe the
existense of maggots(lifeforms) in
each set- up?
2. according to abiogenesis, life
may emerge from non- living
materials. does the sealed flask
setup follow this principle? explain.

16. JOHN
NEEDHAM
EXPERIMENT 1. what does the heating o high
temperature do with the micro-
organism in the broth?
2. if the organisms die due ti the
heating, why does the third set-up
has microbial growth?
3. does this experiment coincide
with the abiogenesis?

17. LAZARO
SPALLANZANI
EXPERIMENT
1. how this experiment differ
from needham?
2. does this experiment prove
or disprove the abiogenesis
idea of the emergence of life
forms? Explain.

18. LOUIS
PASTEUR
EXPERIMENT
1. after the broth was heated, did
microbial growth happen in the set-
up wjth the long curved glass neck?
2. why do you think tere is no
microbial growth with the set- up
with long curved open glass neck?
3, what happens whrn the glass
neck is cut?
4. how will you explain Pasteur’s in
connection to the abiogenesis?

19. FRANCISCO
REDDI’S
EXPERIMENT redi was able to prove that
orgsnisms do not just come to life
spontaneously?

20. JOHN
NEEDHAM
EXPERIMENT
he tried to prove that spontaneous
generation occur in an appropriate
condition.
heat could kill organism even the
smallest one.
when the broth was boiled,all
organisms in it had died from the
heat.
days later, he noticed that a thick
solution had formed on thd broth.

21. LAZARO
SPALLANZANI
EXPERIMENT
needham had not heated enough
to kill all organisms in it.
the setup tat was sealed
remained free from microbial
growth.
he concluded that life occured
from something that entered the
unsealed flask and that is was
the one responsible for life to

22. LOUIS
PASTEUR
EXPERIMENT
spontaneous generation could not
occur.
Vital element form air was necessary
for life to emerge.
Sugar solution and yeast in flask with
long neck.
through heating, elimated the
contaminants.
No oganisms develop in the mixture.
couldn’t reack the mixture.

24. CHARACTE-
RISTICS OF
LIVING
THINGS
1. ARE MADE UP OF
CELLS.
2. METABOLIZE
ANABOLISM,CATABO
LISM
3. GROW AND DEVELOP
4. RESPOND TO STIMULI
5. INTERACT
6. REPRODUCE
7. ADAPT AND EVOLVE
8. ORGANIZED

25. BIOLOGICAL
HIERARCHY
LEVEL
1. ATOM
2. ORGANELLES
3. CELLS
4. TISSUES
5. ORGANS AND ORGAN
SYSTEM
6. ORGANISMS
7. POPULATIONS
8. COMMUNITIES
9. ECOSYSTEMS
10. BIOSPHERE

26. BIOGEOCHE
MICAL
CYLCLE
1. CARBON
CYCLE
2.
PHOSPOROUS
CYCLE
3. NITROGEN
CYCLE

27. THINK
ABOUT
THIS
HUMAN
ACTIVITIES TO
CYCLE OF
NUTRIENT

28. THANK YOU
GOOD LUCK
MARK O. AGUSTIN, LPT