SCIENCE 7
prepared by:
Reniel M. Orinday
Good Day!
prepared by:
Reniel M. Orinday
prepared by:
Reniel M. Orinday
Dear God,
Thank you for the incredible way our bodies grow, heal, and remain strong.
We are grateful for the delicate processes that sustain our lives.
Help us to appreciate the wonder of creation and care for the bodies You've entrusted to us.
Amen.
prepared by:
Reniel M. Orinday
Have a Clean & Safe Day!
prepared by:
Reniel M. Orinday
Let us check the attendance!
prepared by:
Reniel M. Orinday
Reminders
1.Always listen to the teacher.
2.Do not make unnecessary noise.
3.Raise your hands if you want to speak and ask questions.
4.Be kind to others.
5.Help one another in a right way.
KORNY GUESS
Let’s Play
KORNY GUESS
Di
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ANSWER
Division
KORNY GUESS
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Ex
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l
ANSWER
Cell
KORNY GUESS
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Dupli
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ANSWER
Duplication
KORNY GUESS
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e
o
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ANSWER
Chromosome
Question
u
Based on the terms that you’ve guessed, what do you think our today's lesson will be about?
MELC 21:
Compare mitosis and meiosis, and their role in the cell division cycle.
Objectives:
Identify the key differences between mitosis and meiosis in terms of the number of divisions and the type of cells produced.
Explain the purpose of mitosis and meiosis in living organisms, focusing on growth and reproduction.
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Differences between Mitosis and Meiosis
Science 8
prepared by:
Carl Andre F. Nocum
How will you describe the pictures below?
What is Cell Division?
Cell division is the process by which a single cell divides to form two or more new cells.
What is Cell Division?
It is essential for growth.
What is Cell Division?
It is essential for repair.
What is Cell Division?
It is essential for reproduction in organisms.
Two main types of cell division
Mitosis
Meiosis
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2
Mitosis
This is the type of cell division that results in two genetically identical daughter cells. It occurs in somatic (body) cells, used for growth and repair, and in asexual reproduction.
1
Mitosis
It occurs in somatic (body) cells.
nerve cells
blood cells
bone cells
Mitosis
It is used for growth and repair.
onion
wound healing
Mitosis
It is used in asexual reproduction.
starfish
jellyfish
bacteria
Mitosis
It produces two daughter cells
cytokinesis
Mitosis
It has one nuclear division.
This process results in four genetically different cells, each with half the number of chromosomes as the original cell. It occurs in reproductive cells (sperm and eggs) and is essential for sexual reproduction.
2
Meiosis
Meiosis
It occurs in reproductive cells (sperm cells and egg cells)
Meiosis
It is essential for sexual reproduction
Meiosis
It produces four daughter cells.
cytokinesis II
Meiosis
It has two nuclear division.
meiosis I
meiosis II
Marie-Cell Division
ACTIVITY 1
Marie-Cell Division
INSTRUCTIONS: In this activity, you are going to create the two models of cell division using Marie biscuit and some edible toppings and chocolates. You are expected to be creative and make sure that the models are of closely similar to the reference provided.
Use your creativity and resourcefulness. Collaborative effort is highly encouraged. Your output will be presented to class.
MITOSIS vs MEIOSIS
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
Interphase
Prophase I
Metaphase I
Anaphase I
Telophase I
Cytokinesis I
Prophase II
Metaphase II
Anaphase II
Telophase II
Cytokinesis II
4 Stages
8 Stages
Mini Performance Task Rubric
Criteria | |
Correctness | 10pts |
Creativity | 10pts |
Collaboration | 10pts |
Neatness | 10pts |
Presentation | 10pts |
Total | 50pts |
Marie-Cell Division
OUTPUT PRESENTATION
STAGES OF CELL DIVISION
Mitosis and Meiosis
STAGES OF MITOSIS
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
Interphase
4 Main Stages
P
M
A
T
Mnemonics
P
M
A
T
Cytokinesis
MITOSIS vs MEIOSIS
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
Interphase
Prophase I
Metaphase I
Anaphase I
Telophase I
Cytokinesis I
Prophase II
Metaphase II
Anaphase II
Telophase II
Cytokinesis II
4 Stages
8 Stages
MITOSIS vs MEIOSIS
4 Stages
Prophase
Metaphase
Anaphase
Telophase
Prophase I
Metaphase I
Anaphase I
Telophase I
Prophase II
Metaphase II
Anaphase II
Telophase II
Mitosis
Meiosis
8 Stages
ACTIVITY 2
Mitosis and Meiosis Comparison
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Characteristics
Mitosis
Meiosis
Location
Number of daughter cells
Number of nuclear divisions
Steps required to complete the cell division phase
Kind of reproduction associated with
INSTRUCTIONS: Your task is to complete the table below based on the characteristics of Mitosis and Meiosis
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Characteristics
Mitosis
Meiosis
Location
Number of daughter cells
Number of nuclear divisions
Steps required to complete the cell division phase
Kind of reproduction associated with
ANSWERS
Somatic cells
Reproductive cells
Two
Four
One
Two
Prophase
Metaphase
Anaphase
Telophase
Prophase I
Metaphase I
Anaphase I
Telophase I
Prophase II
Metaphase II
Anaphase II
Telophase II
Asexual
Sexual
Think about it!
What do you think will happen if human can reproduce asexually instead of sexually?
I understand that______________
I realize that____________________
Quiz
Instructions: Identify the correct answer from the choices inside the box.
_____1. This type of cell division occurs in body cells and is responsible for growth and repair.
_____2. This type of cell division occurs in reproductive cells and is essential for sexual reproduction.
_____3. The number of cell divisions in mitosis.
_____4. The number of cell divisions in meiosis.
_____5. The type of cells produced by mitosis.
_____6. The type of cells produced by meiosis.
_____7. The main purpose of mitosis in living organisms.
_____8. The main purpose of meiosis in living organisms.
_____9. The genetic outcome of cells after mitosis.
_____10. The genetic outcome of cells after meiosis.
Identical cells Genetically diverse cells Mitosis 2 Sexual reproduction
Somatic cells Growth and repair Meiosis 4 Gametes
Answer Key!
Mitosis 1. This type of cell division occurs in body cells and is responsible for growth and repair.
Meiosis 2. This type of cell division occurs in reproductive cells and is essential for sexual reproduction.
2 3. The number of cell divisions in mitosis.
4 4. The number of cell divisions in meiosis.
Somatic cells 5. The type of cells produced by mitosis.
Gametes 6. The type of cells produced by meiosis.
Growth and repair 7. The main purpose of mitosis in living organisms.
Sexual reproduction 8. The main purpose of meiosis in living organisms.
Identical cells 9. The genetic outcome of cells after mitosis.
Genetically diverse cells 10. The genetic outcome of cells after meiosis.
Assignment:
Instructions: In your own words, explain the differences between mitosis and meiosis. Discuss their purpose in living organisms and provide examples of where each process occurs. Keep your explanation clear and concise.
Thank you!