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Hiisir

Aacha question tah sir

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49×7=343 343+49=392 Option(b) 49 and 392

B option

Jabardast

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Nice ❤mam

6

6 answer hai sir

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15/15

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Dhamekadaar session

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1024

4+6=10 4×6=24 Option(d) 1024

51

Ji mama

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Questions at (9:50) Cell Membrane! *Definition:* The cell membrane, also known as the plasma membrane, is a thin, semi-permeable lipid bilayer that surrounds the cell and separates the interior of the cell from its external environment. *Structure:* 1. Phospholipid Bilayer: Composed of phospholipid molecules with hydrophilic (water-loving) heads and hydrophobic (water-fearing) tails. 2. Embedded Proteins: Integral and peripheral proteins perform various functions, such as transport, signaling, and cell-cell interactions. 3. Cholesterol: Regulates membrane fluidity and permeability. *Functions:* 1. *Selective Permeability:* Controls movement of substances in and out of the cell. 2. *Cell Signaling:* Receives and transmits signals from external environment. 3. *Transport:* Facilitates movement of molecules across the membrane. 4. *Cell-Cell Interactions:* Mediates adhesion, recognition, and communication between cells. 5. *Maintenance of Cell Shape:* Provides structural support and maintains cell morphology. *Types of Transport:* 1. *Passive Transport:* Diffusion, osmosis, and facilitated diffusion. 2. *Active Transport:* Requires energy, e.g., pump proteins. *Membrane Proteins:* 1. *Integral Proteins:* Embedded within the bilayer. 2. *Peripheral Proteins:* Attached to integral proteins or lipids. *Biological Importance:* 1. *Cellular Homeostasis:* Maintains internal environment. 2. *Cell Communication:* Enables signaling and response to stimuli. 3. *Immune Response:* Recognizes and responds to pathogens. 4. *Disease:* Membrane dysfunction contributes to various diseases, e.g., cancer, neurological disorders. *Key Concepts:* 1. Fluid Mosaic Model 2. Lipid Raft 3. Membrane Potential 4. Endocytosis and Exocytosis *Research Applications:* 1. *Cancer Research:* Understanding membrane changes in cancer cells. 2. *Neurological Disorders:* Studying membrane dysfunction in neurodegenerative diseases. 3. *Infectious Diseases:* Developing membrane-targeting therapies. 4. *Synthetic Biology:* Designing artificial membranes for biotechnological applications. *Related Topics:* 1. Cell Wall 2. Cytoplasm 3. Nucleus 4. Mitochondria 5. Endoplasmic Reticulum cell membranes (explained 😅😅)

My question , Here are some challenging math problems for (Javed sir) *Algebra* 1. If a, b, c are roots of x^3 + px^2 + qx + r = 0, then find the value of: ∑(a^2/b + b^2/c + c^2/a) where ∑ denotes summation. 1. Solve for x: |x^2-3x+2| + |x^2+2x-3| = 5 *Calculus* 1. Evaluate: ∫(x^2 + 1) / (x^4 - x^2 + 1) dx 1. Find the maximum value of: f(x) = x^3 - 6x^2 + 9x + 2 on the interval [0, 4] *Geometry* 1. In a triangle ABC, ∠A = 30°, ∠B = 60°, and side AB = 5 cm. Find the length of side BC. 2. A circle is inscribed in a triangle ABC, where ∠A = 90°, ∠B = 45°, and side AB = 10 cm. Find the radius of the circle. *Number Theory* 1. Prove that: 2^(n+1) > (n+1)^2 for all positive integers n. 1. Find the number of positive divisors of: 100000000 = 10^8 *Combinatorics* 1. A committee of 5 members is to be formed from 8 men and 6 women. Find the number of ways to form the committee with exactly 3 men. 2. In a tournament of 7 teams, each team plays every other team exactly once. Find the number of possible outcomes. *Vector Algebra* 1. If vectors a, b, c satisfy: a × b = c, b × c = a, c × a = b then find: |a + b + c| 1. Find the angle between vectors: a = i + 2j + 3k, b = 2i - j + k Good luck! (Reply me 😅😅)

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Calendar ka ye topic hmare liye useful h sir thank you ❤❤

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