Earth and Life Science
Quarter 2 – Module 3:
Introduction to Life Science
Earth and Life Science – Grade 11/ 12
Alternative Delivery Mode
Quarter 2 – Module 3: Introduction to Life Science
First Edition, 2020
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Published by the Department of Education
Secretary: Leonor Magtolis Briones
Undersecretary: Diosdado M. San Antonio
SENIOR HS MODULE DEVELOPMENT TEAM
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Earth and Life Science
Quarter 2 – Module 3:
Introduction to Life Science
Introductory Message
For the facilitator:
Welcome to the Earth and Life Science- Grade 11/12 Alternative Delivery
Mode (ADM) Module on Introduction to Life Science!
This module was collaboratively designed, developed and reviewed by
educators both from public and private institutions to assist you, the teacher or
facilitator in helping the learners meet the standards set by the K to 12 Curriculum
while overcoming their personal, social, and economic constraints in schooling.
This learning resource hopes to engage the learners into guided and
independent learning activities at their own pace and time. Furthermore, this also
aims to help learners acquire the needed 21st century skills while taking into
consideration their needs and circumstances.
In addition to the material in the main text, you will also see this box in the
body of the module:
Notes to the Teacher
This contains helpful tips or strategies
that will help you in guiding the learners.
As a facilitator you are expected to orient the learners on how to use this
module. You also need to keep track of the learners' progress while allowing them
to manage their own learning. Furthermore, you are expected to encourage and
assist
the
learners
as
they
do
the
1
tasks
included
in
the
module.
For the learner:
Welcome to the Earth and Life Sciences-Grade 11/12 Alternative Delivery
Mode (ADM) Module on Introduction to Life Science!
The hand is one of the most symbolized part of the human body. It is often
used to depict skill, action and purpose. Through our hands we may learn, create
and accomplish. Hence, the hand in this learning resource signifies that you as a
learner
is
capable
and
empowered
to
successfully
achieve
the
relevant
competencies and skills at your own pace and time. Your academic success lies in
your own hands!
This module was designed to provide you with fun and meaningful
opportunities for guided and independent learning at your own pace and time. You
will be enabled to process the contents of the learning resource while being an
active learner.
This module has the following parts and corresponding icons:
What I Need to Know
This will give you an idea of the skills or
competencies you are expected to learn in
the module.
What I Know
This part includes an activity that aims to
check what you already know about the
lesson to take. If you get all the answers
correct (100%), you may decide to skip this
module.
What’s In
What’s New
This is a brief drill or review to help you link
the current lesson with the previous one.
In this portion, the new lesson will be
introduced to you in various ways such as a
story, a song, a poem, a problem opener, an
activity or a situation.
2
What is It
This section provides a brief discussion of
the lesson. This aims to help you discover
and understand new concepts and skills.
What’s More
This comprises activities for independent
practice to solidify your understanding and
skills of the topic. You may check the
answers to the exercises using the Answer
Key at the end of the module.
What I Have Learned
This
includes
questions
or
blank
sentence/paragraph to be filled in to process
what you learned from the lesson.
What I Can Do
This section provides an activity which will
help you transfer your new knowledge or
skill into real life situations or concerns.
Assessment
This is a task which aims to evaluate your
level of mastery in achieving the learning
competency.
Additional Activities
In this portion, another activity will be given
to you to enrich your knowledge or skill of
the lesson learned. This also tends retention
of learned concepts.
Answer Key
This contains answers to all activities in the
module.
At the end of this module you will also find:
References
This is a list of all sources used in
developing this module.
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The following are some reminders in using this module:
1. Use the module with care. Do not put unnecessary mark/s on any part of
the module. Use a separate sheet of paper in answering the exercises.
2. Don’t forget to answer What I Know before moving on to the other activities
included in the module.
3. Read the instruction carefully before doing each task.
4. Observe honesty and integrity in doing the tasks and checking your
answers.
5. Finish the task at hand before proceeding to the next.
6. Return this module to your teacher/facilitator once you are through with it.
If you encounter any difficulty in answering the tasks in this module, do not
hesitate to consult your teacher or facilitator. Always bear in mind that you are
not alone.
We hope that through this material, you will experience meaningful learning
and gain deep understanding of the relevant competencies. You can do it!
4
What I Need to Know
This module was developed to help learners to demonstrate an
understanding of the historical development of the concept, origin and the
unifying themes in the study of life. The learners shall be able to appreciate
and value life by taking good care of all beings, humans, plants and
animals.
1. Explain the evolving concept of life based on emerging pieces of evidence.
(S11/12LT-IIa-1)
2. Describe how unifying themes (e.g. structure and function, evolution and
ecosystems) in the study of life show connections among living things and
how they interact with each other and with their environment.
(S11/12LT-IIa-3)
Specific Learning Outcomes
At the end of the lesson, the learners will be able to:
1. Discuss the historical development of the concept of life including
theories, experiments and evidences;
2. Describe the conditions on early Earth that made the origin of life
possible and the first life forms; and
3. Discuss the unifying themes of life and how they are interconnected
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What I Know
Instruction: Choose the correct answer. Write your answer on the space provided.
_____ 1. Which of the following sequences is correct about the level of organization?
a. cell, organ, tissue, organism
b. cell, organ, community, tissue
c. organism, biosphere, cell, organ
d. cell, tissue, organ, organism
_____ 2. Which of the following process refers to the change of characteristic of
species through time?
a. Homeostasis
c. Adaptation
b. Evolution
d. Metabolism
_____ 3. Where does the first life form live?
a. Volcanic vents
b. Plains and fields
c. Oceanic crust
d. Layers of rocks
_____ 4. Which of the following does NOT follow the function and structure
relationship?
a. The child uses its long legs to walk.
b. The bird uses its heavy wings to glide longer.
c. The fish uses it fins to propel against the water.
d. The plant uses its epidermis to protect the inner layers.
_____ 5. When did the first life form exist?
a. 4.3 billion years ago
b. 3.5 billion years ago
c. 3.4 billion years ago
d. 4.6 billion years ago
_____ 6. Which of the following refers to the maintenance of the internal heat of an
organism?
a. Homeostasis
b. Evolution
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c. Adaptation
d. Metabolism
_____ 7. Which of the following domain does NOT belong to the group based on
LUCA?
a. Eukarya
b. Protista
c. Archea
d. Bacteria
_____ 8. Why do prokaryotic organism lives earlier compare to eukaryotic organism?
a. prokaryotic organism has greater adaptability.
b. evolution process
c. prokaryotic is smaller than the eukaryotic organism.
d. eukaryotic organisms have a complex cellular structure.
_____ 9. Which of the following refers to the union of cells to produced new
offspring?
a. Reproduction
c. Irritability
b. Homeostasis
d. Metabolism
_____ 10. Which of the following refers to capability of a person to react in the
internal and external stimuli?
a. Reproduction
c. Irritability
b. Homeostasis
d. Metabolism
_____ 11. Which of the following refers to the maintenance of cellular respiration of
an organism?
a. Homeostasis
c. Adaptation
b. Evolution
d. Metabolism
_____ 12. Which is NOT true about living organism?
a. living organism are from inorganic matter.
b. living organism is composed of only organic matter.
c. living organism has cell
d. living organism can evolve and adapt in the environment.
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_____ 13. Which level of organization wherein lions live together with tigers and
cheetahs?
a. Biomes
c. Population
b. Community
d. Ecosystem
_____ 14. In which eon does the first life formed?
a. Hadean
b. Protozoic
c. Archean
d. Phanerozoic
_____ 15. Which of the following is NOT a cosmopolitan element?
a. Hydrogen
b. Silicon
c. Nitrogen
d. Oxygen
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Lesson
1
Introduction to Life Science
Do you ever wonder where do you come from? You may think that you came
from the union of your parents’ cells by the help of reproduction. But if we will
expand it further, where does the first life come from and when it begins?
To answer that problem, let us dig deeper and explore further as we go back to the
past.
What’s In
Instruction: Arrange the following eons and era according to
geologic time line.
Phanerozoic
Paleozoic
Proterozoic
Hadean
-
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Notes to the Teacher
This module was designed and written to help you to be able to
appreciate and value life by taking good care of all beings, humans,
plants and animals.
What’s New
In the past, you were introduced by the periodic table of elements, you already
know that each element has a single atom and it differs from its sizes, reactivity,
density and composition.
Instruction: Read the selection carefully, then fill-in the missing words to complete
the sentences below.
In 1. __________ eon, there is no such thing as life. The new planet was
bombarded by 2. __________ and volcanic eruption as it was too hot to contain by
living creatures. Until the later part of this eon, hydrologic cycle was continuously
formed that started the formation of 3. __________. Regardless of what the Earth
looks like, scientist believe that the first life sprouts 4. __________ago.
The 5. __________ theory wherein it states that living organisms was formed
by the reaction of chemicals such as 6. __________, methane, carbon, 7. __________,
nitrogen, phosphate and 8. __________ that is submerge in the vast ocean to the
energy produced by lightning that leads to the growth and reproduction of 9.
_______, proteins, enzymes and DNA which are the backbones of all living organism.
There are two classifications of living organism. 10. __________ is an
organism that makes their own food and generates their own energy in a process
called photosynthesis; on the other hand, 11. __________ are dependent consumer.
The scientist theorized that the first living organism is 12. ________ that can
be found in the deep of the oceans, wherein there is an abundant chemicals and
10
energy coming from the vents of volcanic activity in the oceanic crust and free from
harmful heat coming from the rays of 13. _________________.
14. ____________________ (LUCA) is not considered to be the first life form,
but it’s the last far back that can be traced. Unlike other organism, LUCA do not
have the characteristics, because scientists do not know what it really looks like,
but because of three domains like 15. __________,16. __________, and 17. __________
that has shared the same gene across these species and domains it must be
inherited from the common ancestor which is called LUCA.
Different eons and eras passed and different life forms lives, extinct and
evolve through time based on how they function based on their structure. 18.
__________ have the same structure as they are from the same ancestor but differ
from their function like arms of monkey and the fins of dolphin, on the other hand,
19. __________ have different structure as it was from different ancestor, but similar
in function like the wings of bird and insects.
Therefore, organic matter such human being is theorized that came from 20.
_________ matter that combined together and grow the reproduced through time.
What is It
Now that you already know the history of our well-being, let us now jump in
on how atoms become a biosphere.
Instruction: Supply the names that were described to complete the flow chat
about Level of Organization.
1. It is the basic unit of matter.
2. It is a combination of two or more
atom
8. It is a combination of different organ
that has the same function.
9. It is living being
3. It is a combination of molecules that
forms protein, fats etc.
10. It is a body of living being that has
common characteristics.
4. These are tiny parts of the cell like
mitochondria and golgi bodies
11. It is an interacting population of
various kinds.
5. It is basic unit of life
12. It is a complex community of
organisms together with environment
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6. It is an intercellular substance
13. It is the part of the world in which
life exist.
7. It is a part of the body that function
depending on its activity.
1.
2.
3.
7.
6.
8.
9.
4.
5.
10
11.
12.
13.
12
What’s More
Instruction: Classify the following characteristics of living organism based
on the unifying themes.
Metabolism
Growth
Irritability
Reproduction
Adaptation
Homeostasis
Development
__________ 1. The intelligence of a person progresses through time with the
help of previous experiences.
__________ 2. There are species of plant that dies when there is a direct
sunlight because of much heat it receives.
__________ 3. Filipinos are spread out around the globe, even in the coldest
or hottest area there is a Filipino who works for their family.
__________ 4. The dog in an experiment called classical conditioning salivates
whenever it hears the bell.
__________ 5. The body of animals converts its food into energy and
eliminates its waste called feces.
__________ 6. Both boys and girls underwent the stage of puberty, which is
the transition of stages from children to adolescent.
__________ 7. In the midst of April to May, every Filipino sweats vigorously
due to extreme heat in the dry season.
__________ 8. New born children often cry when hungry, tired or sick.
__________ 9. New sprout of ferns are from the spores that was delivered by
strong wind to the open fields.
__________ 10.
photosynthesis.
Plants
make
its
own
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food
by
the
process
called
What I Have Learned
Instruction: Make a concept map of the relationship of unifying themes and
level of organization to the origin of life.
Criteria
Outstanding (3)
Satisfactory (2)
Poor (1)
Content
All the facts and
Some facts and
The diagram does
information are
information are not
not cater the
present in the
present to the diagram.
information.
The diagram shows
The diagram shows some
There is no relation
all the relationship to
of the relationship to the
shown in the
the origin of life.
origin of life.
diagram.
(2x)
diagram
Relativity
What I Can Do
Instruction: Based on the discussion, explain the relation of these
quotations to the history to the Earth and to the lives of people in the
present times.
1. “Life will not be contained. Life breaks free” – Steven Spielberg
2. “The whole is greater than the sum of its part” –Aristotle
Criteria
Content
(2x)
Outstanding (3)
All the facts and
information are
present in the
diagram
Satisfactory (2)
Some facts and
information are not
present to the diagram.
Poor (1)
The diagram does
not cater the
information.
Coherence
The words have
oneness of idea.
Some words are not
aligned with other.
There is no oneness
of idea.
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Assessment
Instruction: Choose the correct answer. Write your answer on the space
provided.
_____ 1. Which of the following sequences is correct about the level of
organization?
a. cell, organ, tissue, organism
b. cell, organ, community, tissue
c. organism, biosphere, cell, organ
d. cell, tissue, organ, organism
_____ 2. Which of the following process refers to the change of characteristic
of species through time?
a. Homeostasis
b. Evolution
c. Adaptation
d. Metabolism
_____ 3. Where does the first life form live?
a. Volcanic vents
b. Plains and fields
c. Oceanic crust
d. Layers of rocks
_____ 4. Which of the following does NOT follow the function and structure
relationship?
a. The child uses its long legs to walk.
b. The bird uses its heavy wings to glide longer.
c. The fish uses it fin to propel against the water.
d. The plant uses its epidermis to protect the inner layers.
_____ 5. When did the first life form exist?
a. 4.3 billion years ago
b. 3.5 billion years ago
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c. 3.4 billion years ago
d. 4.6 billion years ago
_____ 6. Which of the following refers to the maintenance of the internal heat
of an organism?
a. Homeostasis
b. Evolution
c. Adaptation
d. Metabolism
_____ 7. Which of the following domain does NOT belong to the group based
on LUCA?
a. Eukarya
b. Protista
c. Archea
d. Bacteria
_____ 8. Why do prokaryotic organism lives earlier compare to eukaryotic
organism?
a. prokaryotic organism has greater adaptability.
b. evolution process
c. prokaryotic is smaller than the eukaryotic organism.
d. eukaryotic organisms have a complex cellular structure.
_____ 9. Which of the following refers to the union of cells to produced new
offspring?
a. Reproduction
b. Homeostasis
c. Irritability
d. Metabolism
_____ 10. Which of the following refers to capability of a person to react in
the internal and external stimuli?
a. Reproduction
b. Homeostasis
c. Irritability
d. Metabolism
_____ 11. Which of the following refers to the maintenance of cellular
respiration of an organism?
a. Homeostasis
b. Evolution
c. Adaptation
d. Metabolism
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_____ 12. Which is NOT true about living organism?
a. living organism are from inorganic matter.
b. living organism is compo
sed of only organic matter.
c. living organism has cell
d. living organism can evolve and adapt in the environment.
_____ 13. Which level of organization wherein lions lives together with tigers
and cheetahs?
a. Biomes
b. Community
c. Population
d. Ecosystem
_____ 14. In which eon does the first life formed?
a. Hadean
b. Protezoic
c. Archean
d. Phanerozoic
_____ 15. Which of the following is NOT a cosmopolitan element?
a. Hydrogen
b. Silicon
c. Nitrogen
d. Oxygen
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Additional Activities
Instruction: Imagine that you live as Charles Darwin and you need to
explain the Theory of Evolution of man, how will you explain it by the use of
drawing?
Criteria
Content
Creativity
Outstanding (3)
Satisfactory (2)
Poor (1)
All of the facts that
Some of the facts that
The comics is out
are listed are correct
are listed are correct
of the topic.
and relevant.
and relevant.
The comics is
The comics is creative
The comics is not
creative and has
but less impact.
creatively done.
great impact
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1. ATOM
2. MOLECULE
3. MACROMOLECULE
4. ORGANELLES
5. CELL
6. TISSUE
7. ORGAN
8. ORGAN SYSTEM
9. ORGANISM
10. POPULATION
11. COMMUNITY
12. ECOSYSTEM
13. BIOSPHERE
1. DEVELOPMENT
2. HOMEOSTASIS
3. ADAPTABILITY
4. IRRITABILITY
5. METABOLISM
6. GROWTH
7. HOMEOSTASIS
8. IRRITABILITY
9. REPRODUCTION
10. METABOLISM
WHAT’S MORE
HADEAN
1. HADEAN
2. METEORS
3. OCEAN
4. 3.5 BILLION YEARS
5. PROMORDIAL SOUP
6. AMMONIA
7. OXYGEN
8. HYDROGEN
9. SUGAR
10. AUTOTROPHS
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
WHAT’S IS IT
HETEROTROPHS
AUTOTROPHS
SUNLIGHT
LAST UNIVERSAL COMMON ANCHESTOR
ARCHEA
BACTERIA
EUKARYA
HOMOLOGOUS STRUCTURE
ANALOGOUS STRUCTURE
INORGANIC
WHAT’S NEW
PHANEROZOIC
PROTEROZOIC
ARCHEAN
P
A
L
E
O
Z
O
I
C
M
E
S
O
Z
O
I
C
C
E
N
O
Z
O
I
C
1.
2.
3.
4.
5.
D
B
C
B
B
6. A
7. B
8. D
9. A
10. C
11.
12.
13.
14.
15.
D
B
B
C
B
WHAT I KNOW
WHAT’S IN
Answer Key
References
CHEd Philippines. Teaching Guide for Senior High School EARTH AND LIFE
SCIENCE. 2016
Wright, Luka Seamus and Hilditch, Nick. The mysterious origin of the life on Earth.
August 26, 2019 retrieved on http://youtu.be/de1hiS_XjWg August 7, 2020
Battison, Leila. How did life begin?. History of the Earth. July 4, 2020 retrieved on
http://youtu.be/WZCeOUSYB4g August 7, 2020
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For inquiries or feedback, please write or call:
Department of Education – Region III,
Schools Division of Bataan - Curriculum Implementation Division
Learning Resources Management and Development Section (LRMDS)
Provincial Capitol Compound, Balanga City, Bataan
Telefax: (047) 237-2102
Email Address: bataan@deped.gov.ph
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