Bio1WK1.2 PDF - Cell Structure and Function

Duration: 130 min Middle School Grades: 6 - 8 CCSS, NGSS The Structure and Function of Major and Subcellular Organelles LILLET L. ROSALES Learning Objectives At the end of the lesson, learners are expected to: 1. Identify the major and subcellular organelles 2. Devel...

Duration: 130 min Middle School Grades: 6 - 8 CCSS, NGSS The Structure and Function of Major and Subcellular Organelles LILLET L. ROSALES Learning Objectives At the end of the lesson, learners are expected to: 1. Identify the major and subcellular organelles 2. Develop an understanding of the function of each organelle 3. Appreciate working as a unifies whole in accomplishing a task. Activity 1 “Thinking as a Scientist!” 3 mins Directions. Compute for what is ask. Using a light microscope you examine a thin section of a spherical cells you find that it is 0.3mm in diameter. The nucleus is about one-fourth as wide. What is the diameter of nucleus in micrometer? ANSWER:.O3mm *1/4 = 0.075mm 1mm= 1000micrometer.075 x 1000 = 75 micrometer Activity 2.1- Still remember me? 5 mins Directions. Name the Parts. Animal Cell Answer: 1.Nucleolus 2.Nucleus 3.Ribosomes 4.Vesicle 5.Rough Endoplasmic Reticulum 6.Golgi Apparatus/ Golgi body 7.Cytoskeleton 8.Smooth Endoplasmic Reticulum 9.Mitochondria 10.Vacuole 11.Cytosol 12.Lysosome 13.Centriole 14.Cell Membrane  2 mins Plant Cell Answer: A.Vacuole B.Cell wall C.Endoplasmic Reticulum D.Nucleus E.Mitochondria F.Chloroplast What is it? The principal parts of a cell are: 1. Cell membrane 2. Cytoplasm 3. Nucleus The nucleus is often called the “control center” of the cell because it contains DNA. The nucleolus is where the ribosomes are formed and this structure can be found both in plants and animals. The cell membrane is a semi-permeable membrane that facilitate the movement of molecules inside and outside the plant or animal cell. The cytoplasm is a viscous fluid or jelly like material where organelles are embedded. The Mitochondria are called the “powerhouses” of cells. They produce much of the energy a plant or animal cell needs to carry out its functions. The endoplasmic reticulum (ER) is a series of tunnels throughout the cytoplasm. They transport proteins from one part of the cell to another that is why they are called as the transport center of the cell. Two types of Endoplasmic Reticulum: Smooth- ribosome free and synthesis of lipids. Rough - contains ribosomes and releases newly made protein from the cell. Ribosomes are the protein factories of the cell. Golgi bodies receive proteins and other compounds from the ER. They package these materials and distribute them to the plant and animal parts of the cell. Lysosomes contain hydrolytic enzymes that can break things down. The cytoskeleton is a series of fibers made from proteins. It provides structure to the cell and gives it its shape. Components of cytoskeleton Microtubules- absent in plant cell, it provide pathways for certain cellular molecules Intermediate filaments- these are absent in plants, they are found in durable structures such as hair, scales and fingernails. Microfilaments- pipe-like structures and help provide shape and movement for the cells. Cell wall is a rigid organelle composed of cellulose that gives plant cell its box-like shape.. Plastids are double membrane bound organelles found in plants. It is basically the storage of their pigments. Activity 2.2 “Analogy” 10 mins 1. Lysosome : digestive system of cell ; Nucleus : ______________ 2. Mitochondria: Energy-processing ; Nucleolus: _______________ 3. Plant cell: Cell wall ; Animal cell : ________________ 4. Rough ER:________________ ; Smooth ER: synthesis lipids 5: _________________ vacuole: collect excess water; _________________ vacuole: stores cellular liquid of organelles Activity 3.1 “Scheme of ideas” 15 Directions: Study the function of each organelle and answer the question mins inside the table. Organelle Thought Provoking Question Rough endoplasmic reticulum makes membrane and What makes RER rough? proteins Smooth endoplasmic reticulum has a variety of What are the three functions of SER? functions Vacuoles function is the general maintenance of the If yes, cite their difference. cell. Do both plant and animal cells have vacuole? Chloroplasts convert solar energy to chemical energy What does photosynthesis accomplish? Mitochondria harvest chemical energy from food What is cellular respiration? Activity 3.2 “My City” 10 mins Directions: Relate the identified parts and function of the cell to the given parts of the factory. Write a short justification of how their functions are related. Fill in the table below  Factory part Organelle Justification 1. City limits 2. Road system 3. City Hall 4. Power plants 5. Food producing factories 6. Post office 7. Walls and Studs 8. Garbage disposal 9. Ware house 10. Atmosphre  Factory part Organelle Justification 1. City limits cell membrane controls what goes in and out of the city 2. Road system ER allows movement through the city 3. City Hall nucleus controlling forces in the city 4. Power plants mitochondria produces energy for the city 5. Food producing factories ribosomes bring together raw materials 6. Post office Golgi body sorted then packed and distribute 7. Walls and Studs cell wall support the structure in the city 8. Garbage disposal lysosome breaks down waste 9. Ware house vacuoles store items and substances 10. Atmosphere cytoplasm main substance of the city Activity 3.3 “Connections” 5 mins Muscle contracts and elongates as it moves. This is accomplished by different organelles that work together to aid movement Guide Question: How do mitochondria, smooth endoplasmic reticulum and the cytoskeleton work together in contraction of a muscle cell? Activity 4.1 What I have learned 5 mins Matching Type: Structure/Function Cell Part Ribosome 1. Stores material within the cell Lysosome 2. The sites of protein synthesis Chloroplasts 3. Transports materials within the cell Vacuole 4. Jelly-like substance in the cell ER 5. Organelle that manages or controls all the cell Nucleus functions in a eukaryotic cell 6. Contains chlorophyll, a green pigment that traps Golgi Apparatus energy from sunlight and gives plants their green Cytoplasm color Cell Wall 7. Digests excess or worn-out cell parts, food particles Plasma Membrane and invading viruses or bacteria Smooth ER 8. Provides temporary storage of food, enzymes and Mitochondrion waste products Cytoskeleton 9. Produces a usable form of energy for the cell 10. Produces lipids Activity 4.2 Assessment 5 mins Choose the correct answer 1. Its structure is basically thick and rigid layer that surround ds the plant cell and provides support and structure. a. Chloroplast b. Cell wall c. Lysosome d. nucleus 2. The best feature of this organelle is its energy producing ability a. Cytoplasm b. Cell wall c. Mitochondria d. Golgi body 3. What role(s) does the cytoskeleton play in a living cell? a. Maintaining cell shape b. Movement c. Contraction d. All of the above 4. This organelle serves as a primary packaging area for molecules that will be distributed throughout the cell? a. Mitochondrion b. Vacuole c. Cytoskeleton d. Golgi body 5. Which organelle breaks down organelles that are no longer useful? a. Golgi body b. Lysosome c. Endoplasmic reticulum d. Mitochondrion Activity 4.3 My own type of cell Make your own model of an animal or plant cell using recycled or indigenous materials. Label the parts. Rubrics Category 3 2 1 Construction materials Creative and unique materials Appropriate materials were Inappropriate materials were selected selected were selected Organelles size and shape Each Organelles is a 1-2 organelles may be missing from 3-6 organelles may be characteristics size and the model missing from the model shapes that represents the organelles structure and function Flag construction All organelles flag flags are 1-2 flags missing/misplace. Flags 3-6 flags missing/misplace. correctly labelled with correct are type or neatly handprint Flags are not type or neatly function. Flags are type or handprint neatly hand print Reflection: Learners will write on their notebook their insights about the lesson. I understand that__________________________________________ I realized that_____________________________________________