Questions and Answers
Who is the writer of this self-learning kit?
Lielin A. de la Zerna
What major did Lielin A. de la Zerna complete for her Master's degree?
Science Education
What role did Alexa L. Borbon fulfill in this self-learning kit?
Layout Artist
What significant topic does this self-learning kit discuss?
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The cell theory was only formulated by a single scientist.
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What kind of learning modality is provided by this self-learning kit?
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What was an achievement of Alexa L. Borbon in arts competition?
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Where is Lielin A. de la Zerna currently teaching?
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What institution did Lielin A. de la Zerna attend for her undergraduate studies?
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What are living things structurally made of?
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What is the basic unit of life?
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Where do cells come from?
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What was used to study about cells?
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Where was the term 'cell' coined from?
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The following are the three main parts of a cell except _____
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What is the common shape of an animal cell?
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Where are the organelles of a cell located?
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What organelle is known as the 'control center' of the cell?
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What regulates the passage of materials into and out of the cell?
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How did the idea about the cell begin?
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Who are the three main contributors of the cell theory?
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Who first saw a cell under the microscope?
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Who concluded that plants are made up of cells?
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Where is the site for the breakdown of food molecules to produce adenosine triphosphate (ATP)?
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What organelle is known as the 'digestive sac' which is capable of destroying old and damaged cells?
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What occupies the largest part of the cytoplasm in a plant cell?
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Study Notes
Overview of Cell Theory
- Cell theory is a foundational concept in biology, essential for understanding other topics.
- The cell is the basic unit of life and is integral to all living organisms.
- Organisms can be unicellular (single-celled) or multicellular (many cells).
Historical Development
- The idea of the cell emerged over 300 years through various studies by biologists.
- Hans and Zacharias Jansen invented the first simple microscope in 1590.
- Robert Hooke coined the term "cell" in 1667 after observing cork tissue under a microscope.
- Anton van Leeuwenhoek discovered sperm cells and bacteria around 1675 using an improved microscope.
- Matthias Schleiden in 1838 proposed that all plants are made up of cells.
- Theodore Schwann in 1839 extended this idea to animals, stating that all living things consist of cells.
- Rudolf Virchow concluded in 1855 that all living cells come from preexisting cells.
Postulates of Cell Theory
- All living things are composed of cells.
- The cell is the fundamental unit of life.
- Cells arise from the division of preexisting cells.
Cell Structure and Functions
- Cells consist of three main parts: the cell membrane, cytoplasm, and nucleus.
- The cell membrane regulates the entry and exit of substances and facilitates communication.
- Cytoplasm contains organelles where metabolic processes, such as protein synthesis and ATP production, occur.
- The nucleus serves as the control center, housing chromosomes and DNA responsible for hereditary traits.
Major Organelles and Their Functions
- Mitochondria: Powerhouses where sugar molecules are transformed into ATP, the energy currency of the cell.
- Ribosomes: Sites for protein synthesis, translating coded messages from mRNA.
- Endoplasmic Reticulum (ER): Network involved in the transport of lipids and proteins; exists as rough ER (with ribosomes) and smooth ER (without ribosomes).
- Golgi Apparatus: Modifies, sorts, and packages macromolecules for secretion or transport to organelles.
- Lysosomes: Known as "digestive sacs," contain enzymes to break down waste and damaged cell parts.
- Peroxisomes: Involved in oxidation reactions, producing hydrogen peroxide, common in liver cells.
- Vacuoles: Storage sacs that might be involved in waste excretion and controlling cell turgor, especially prominent in plant cells.
- Centrosome: Contains centrioles that are crucial for cell division.
- Cytoskeleton: Provides structural support and facilitates movement within the cell.
- Plastids (in plant cells): Include chloroplasts for photosynthesis, chromoplasts for storing pigments, and leucoplasts for storing starches.
- Cell Wall (in plant cells): Provides additional support and protection.
Interesting Facts
- An adult human body contains approximately 30 trillion cells.
- Daily, thousands of cells replicate to replace older, damaged ones.
- Nutrients from food are vital for cell health, helping in energy production and cellular repair.
Performance Task
- Create a 3D model of a plant or animal cell using recyclable materials and label the organelles.
Importance of Nutrition
- A balanced diet directly influences cellular function and the production of healthy new cells.
- Proper nutrition helps maintain overall cellular health and can prevent chronic diseases.### Contributions to Cell Theory
- Significant scientists played crucial roles in developing the cell theory, shaping our understanding of cells as the basic unit of life.
- Key discoveries related to cell theory occurred at specific historical moments, each contributing to foundational biological principles.
Cell Organelles and Their Functions
- Different organelles within cells serve distinct functions essential for the cell's operation and overall health.
- Understanding these organelles is vital for grasping how cells function and interact with their environment.
Learning and Application
- Illustrations are utilized to enhance learning and comprehension of complex biological concepts.
- Expected outputs from learners aim to demonstrate the application of knowledge gained, promoting a foundation for lifelong learning.
About the Author and Illustrator
- Lielin A. de la Zerna holds a BSEd in General Science and an MAEd in Science Education, currently teaching at Sibulan Science High School.
- Alexa L. Borbon, an accomplished Grade 10 artist, has won several awards in various art competitions, showcasing her talent in creative expression.
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Description
This quiz explores key details about a self-learning kit, including its authorship and the educational background of Lielin A. de la Zerna. It further examines the roles of contributors like Alexa L. Borbon and discusses the main topics covered, such as cell theory and learning modalities. Ideal for understanding educational resources in biology.
