parts and function of cell - eukaryotic and prokaryotic

parts and function of cell - eukaryotic and prokaryotic

1. Let’s Pray

2. HOUSE RULES 1. Always observe our health protocols. 2. Turn off your phones. Using of phone during class hours is strictly prohibited. Violation of this rule is an automatic ground for phone confiscation. 3. One speaker at a time. When someone is speaking, keep quiet and listen. If you want to say something, raise your hand and wait for your teacher to recognize you.

3. Biology General Prepared By: Arvie Y. Alvarez 1

4. Describe the structural components of the cell membrane Relate the structure and composition of the cell membrane to its function Explain transport mechanisms in cells (diffusion, osmosis, facilitated transport, active transport) Differentiate exocytosis and endocytosis Learning Target:

5. As you enter to an institution like a school, have you observed that there is a guard in the gate? What do you think is his role in school?

6. How does cell membrane protects other organelles inside the cell? Essential Question:

7. Activity : The Cell Membrane Group 1: Phospholipid Bilayer Group 2: Embedded Proteins (Integral Proteins) Group 3: Cholesterol Group 4: Carbohydrate Chains Group 5: Transport Proteins (Carrier/Channel Proteins) Guide Questions : How do things move into and out of the cell? What controls the movement of materials into and out of the cell?

8. ❗ Reminder: Use your phones only for this activity Avoid unrelated apps or games Work collaboratively and stay on task

9. Activity : The Cell Membrane Group 1: Phospholipid Bilayer Group 2: Embedded Proteins (Integral Proteins) Group 3: Cholesterol Group 4: Carbohydrate Chains Group 5: Transport Proteins (Carrier/Channel Proteins) Guide Questions : How do things move into and out of the cell? What controls the movement of materials into and out of the cell?

10. is Cell Membrane?

11. Cell Membrane Structure

12. The Phospholipid Bilayer acts as a barrier to the passage of molecules and ions into and out of the cell.

13. Hydrophobic Tail – Water Fearing Hydrophilic head – Water Loving

14. Structure of Plasma Membrane It is the boundary, which separates the living cell from their non-living surroundings. It is the phospholipid bilayer. Plasma membrane is an amphipathic, which contains both hydrophilic and hydrophobic tails. It is a fluid mosaic of lipids, proteins and carbohydrate. It is lipid bilayer, which contains two layers of phospholipids, phosphate head is polar (water loving), fatty acid tails non-polar (water fearing) and the proteins embedded in membrane.

15. The cell membrane’s flexible bilayer structure and its combination of proteins, lipids, and carbohydrates allow it to perform its key function. Controlling the movement of substances in and out of the cell, and communicating with other cells.

16. How does cell membrane protects other organelles inside the cell? Essential Question:

17. JAM SESSION! Just A Minute Session!

18. ACTIVITY 1 1. _________ 2. _________ 3. _________ 4. _________ 5. _________

19. Transport Mechanisms in Cells Cells require and use energy and materials to perform cellular tasks. Such task might include movement, packaging and importing materials, dividing and reproducing. As energy flows within a cell, these materials also flow so that growth, repair, and replacement may continue within the cell.

20. The exchange of materials between cell is usually through two main processes: Passive Transport Active Transport

21. Passive transport involves the movement of molecules from higher concentration to lower concentration ( it follows the concentration gradient ), no amount of energy is required and molecules move randomly. Concentration gradient – the flow of materials, whether solvent or solute, is from greater to lesser concentration.

22. Examples of passive transport 1. Diffusion – it involves random movement of substances or molecules from an area of high concentration to an area of low concentration.

23. Examples of passive transport 2. Facilitated diffusion – it is the movement of specific particles through specific carrier proteins situated in the membrane. This also follows the concentration gradient.

24. Examples of passive transport 3. Osmosis – it is the movement of water across membrane. Water moves from high to low concentration.

25. Active transpor t involves the movement of molecules from lower concentration to higher concentration with the use of energy.

26. Examples of active transport ENDOCYTOSIS – it is taking the bulky substances INTO a cell. EXOCYTOSIS – it is taking bulky substances OUT of a cell

27. Bulk Transport The movement of macromolecules such as proteins or polysaccharides into or out of the cell is called bulk transport.

28. Types of Solution Type Description Effect on the cell HYPOTONIC SOLUTION A type of solution with high concentration of solute inside the cell, thus water enters the cell. Swell, burst, turgid, cytolysis HYPERTONIC SOLUTION A type of solution with high concentration of solute outside the cell, thus water leaves the cell. Shrink, shrivel, plasmolysis ISOTONIC SOLUTION A type of solution with high concentration of solute outside the cell is equal to that within the cell, water moves equally in both directions. Normal, no change, the same, dynamic equilibrium

29. A. Identify the name for each part of the cell membrane. 1 point each. ______ 1. Phospholipid Bilayer ______ 2. Integral Protein ______ 3. Fatty Acid Tails ______ 4. Phosphate Heads ______ 5. Peripheral Protein ______ 6. Cholesterol ______ 7. Glycoprotein ______ 8. Glycolipids C H G

30. G H C

31. Column A ___ Diffusion ___ Osmosis ___ Facilitated Transport ___ Active Transport ___ Passive Transport   Column B a. The movement of molecules from an area of higher concentration to an area of lower concentration without energy input. b. Type of passive transport that involves the movement of water molecules across a selectively permeable membrane. c. Movement of molecules across the membrane with the help of carrier or channel proteins, but without energy input. d. Transport process that requires energy (ATP) to move molecules against the concentration gradient. e. General term for transport mechanisms that do not require cellular energy. Directions : Match the terms in Column A with the correct description in Column B . Write the letter of the correct answer on the blank before each number.

32. Let’s Pray

33. HOUSE RULES 1. Always observe our health protocols. 2. Turn off your phones. Using of phone during class hours is strictly prohibited. Violation of this rule is an automatic ground for phone confiscation. 3. One speaker at a time. When someone is speaking, keep quiet and listen. If you want to say something, raise your hand and wait for your teacher to recognize you.

34. Activity 1: Cell Membrane Making Construct a cell membrane model Procedure: Prepare a base for the cell membrane. The size is like long bond paper. Fold the base and design your cell membrane. Draw or cut out pictures of a cell membrane. Include its functions. Design it according to your preference. Be guided with the rubric below as you are doing your model.

35.   4 3 2 1 Appearance 20% Appearance is neat, labels are typed or neatly written, lapbook is organized. Model stands out from the rest, shows evidence of considerable effort. Appearance is neat, labels are typed or neatly written, lapbook is organized, and shows evidence of good effort. Labels are hard to read, lapbook is not neatly done, more effort needed Appears hastily built, lack of effort is evident. Creativity 20% Cell membrane model is unique and highly creative design not often seen in most projects. Good, creative use of materials that are often used by other students Minimal creativity is used; project is a poster or other 2-D model. Lacks creativity, copied from diagram in book. Details 30% All structures and functions are accurately detailed and clearly represented. Most structures and functions are accurately detailed and clearly recognizable. More detail needed to recognize cell membrane structures. Some are not recognizable. Structures and functions of cell, and stages of cell division are not distinguishable. Labeled Structures 30% 7+ structures are correctly located and labeled on the model. 5-6 structures are correctly located and labeled on the model. 4-5 structures are correctly located and labeled on the model. <4 structures are labeled OR there are errors with structures identified.

36. Questions for Analysis: What can you say about the structural components of cell membrane that you made? How can you relate the structural components of cell membrane to its function? Why is cell membrane present in both eukaryotic and prokaryotic cell?

37. END OF THE LESSON – THANKYOU FOR LISTENING!