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Repost from Fana Education™
Important terms in Biology for EUEEDNA: Deoxyribonucleic acid, a molecule that carries genetic information. ➖ #RNA: Ribonucleic acid, a molecule that plays a key role in protein synthesis. ➖ Protein: A macromolecule made up of amino acids that carries out a variety of functions in the cell. ➖ Enzyme: A type of protein that catalyzes chemical reactions in the cell. ➖ Cell membrane: The thin, flexible layer that surrounds all cells and regulates the movement of molecules in and out of the cell. ➖ Mitosis: The process by which a single cell divides into two identical daughter cells. ➖ #Meiosis: The process by which cells divide to produce gametes (sperm and eggs), each with half the number of chromosomes as the parent cell. ➖ #Gene: A segment of DNA that codes for a specific protein or trait. ➖ #Allele: One of two or more alternative forms of a gene. ➖ #Mutation: A change in the DNA sequence that can result in altered gene function or the creation of new alleles. ➖ #Natural selection: The process by which individuals with advantageous traits are more likely to survive and reproduce, leading to the evolution of populations over time. ➖ #Adaptation: A trait or characteristic that increases an organism's fitness in its environment. ➖ #Photosynthesis: The process by which green plants convert sunlight into energy in the form of organic compounds. ➖ #Cellular respiration: The process by which cells convert organic compounds into energy in the form of ATP. ➖ #Ecosystem: A community of living and non-living things that interact with each other and their environment. ➖ #Homeostasis: The ability of organisms to maintain a stable internal environment in the face of changing external conditions. ➖ #Evolution: The process by which species change over time as a result of genetic variation and natural selection. ➖ #Ecology: The study of the interactions between living organisms and their environment. ➖ #Biotechnology: The use of living organisms or their products to develop new products or processes. ➖ #Epidemiology: The study of the distribution and determinants of health and disease in populations. ➖ #Chromosome: A structure made of DNA and protein that carries genetic information. ➖ #Cytoplasm: The gel-like substance inside a cell that contains organelles and other cell components. ➖ #Organelle: A specialized structure within a cell that performs a specific function. ➖ #Nucleus: The control center of a cell that contains the cell's DNA. ➖ #Ribosome: The site of protein synthesis in a cell. ➖ #Mitochondria: The organelles responsible for producing ATP through cellular respiration. ➖ #Chloroplast: The organelles in plant cells responsible for photosynthesis. ➖ #Cytoskeleton: The network of protein filaments that give a cell its shape and allow for movement. ➖ #Endoplasmic reticulum: A network of membranes in the cytoplasm that is involved in protein and lipid synthesis. ➖ #Golgi apparatus: An organelle that modifies, sorts, and packages proteins for secretion or transport. ➖ #Lysosome: An organelle that contains enzymes for breaking down and recycling cellular waste. ➖ #Vacuole: A membrane-bound organelle that stores materials such as water, nutrients, and waste products. ➖ #ATP: Adenosine triphosphate, the molecule that carries energy within cells. ➖ #Aerobic respiration: The process of producing ATP in the presence of oxygen. ➖ #Anaerobic respiration: The process of producing ATP in the absence of oxygen.
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Repost from Top Students
አንድ 12ኛ ክፍል ተፈታኝ ተማሪ የግድ ሊያውቃቸው የሚገቡ የማትስ ፎርሙላወች!!! 1. Pythagorean theorem: a² + b² = c² 2. Quadratic formula: x = (-b ± √(b² - 4ac)) / 2a 3. Distance formula: d = √((x₂ - x₁)² + (y₂ - y₁)²) 4. Slope-intercept form of a line: y = mx + b 5. Point-slope form of a line: y - y₁ = m(x - x₁) 6. Midpoint formula: ((x₁ + x₂)/2, (y₁ + y₂)/2) 7. Law of sines: a/sin A = b/sin B = c/sin C 8. Law of cosines: c² = a² + b² - 2ab cos C 9. Sum of angles in a triangle: A + B + C = 180° 10. Area of a triangle: A = (1/2)bh 11. Volume of a sphere: V = (4/3)πr³ 12. Volume of a cylinder: V = πr²h 13. Volume of a cone: V = (1/3)πr²h 14. Surface area of a sphere: A = 4πr² 15. Surface area of a cylinder: A = 2πr² + 2πrh 16. Surface area of a cone: A = πr² + πrs, where s is the slant height 17. Binomial theorem: (a + b)ⁿ = Σ(n choose k)a^(n-k)b^k, where Σ is the sum from k=0 to n, and (n choose k) is the binomial coefficient 18. Fundamental theorem of calculus: ∫a^b f(x) dx = F(b) - F(a), where F is the antiderivative of f 19. Derivative of a constant: d/dx(c) = 0 20. Power rule for derivatives: d/dx(xⁿ) = nx^(n-1) 21. Product rule for derivatives: d/dx(fg) = f'g + fg' 22. Quotient rule for derivatives: d/dx(f/g) = (f'g - fg')/g² 23. Chain rule for derivatives: d/dx(f(g(x))) = f'(g(x))g'(x) 24. Mean value theorem: if f is continuous on [a,b] and differentiable on (a,b), then there exists c in (a,b) such that f'(c) = (f(b) - f(a))/(b-a) 25. Intermediate value theorem: if f is continuous on [a,b], then for any y between f(a) and f(b), there exists c in [a,b] such that f(c) = y 26. Rolle's theorem: if f is continuous on [a,b] and differentiable on (a,b), and if f(a) = f(b), then there exists c in (a,b) such that f'(c) = 0 27. Integration by substitution: ∫f(g(x))g'(x) dx = ∫f(u) du, where u = g(x) 28. Integration by parts: ∫u dv = uv - ∫v du 29. L'Hopital's rule: if lim(x → a) f(x)/g(x) = 0/0 or ∞/∞, then lim(x → a) f(x)/g(x) = lim(x → a) f'(x)/g'(x) 30. Taylor series: f(x) = Σ(n=0 to ∞) f^(n)(a)/n!(x-a)^n, where f^(n) is the nth derivative of f 31. Euler's formula: e^(ix) = cos(x) + i sin(x) 32. De Moivre's theorem: (cos x + i sin x)^n = cos(nx) + i sin(nx) 33. Fundamental trigonometric identities: sin² x + cos² x = 1, 1 + tan² x = sec² x, 1 + cot² x = csc² x 34. Double angle formulas: sin 2x = 2sin x cos x, cos 2x = cos² x - sin² x, tan 2x = (2tan x)/(1 - tan² x) 35. Half angle formulas: sin(x/2) = ±√((1 - cos x)/2), cos(x/2) = ±√((1 + cos x)/2), tan(x/2) = ±√((1 - cos x)/(1 + cos x)) 36. Sum-to-product formulas: sin A + sin B = 2sin((A+B)/2)cos((A-B)/2), cos A + cos B = 2cos((A+B)/2)cos((A-B)/2), sin A - sin B = 2cos((A+B)/2)sin((A-B)/2), cos A - cos B = -2sin((A+B)/2)sin((A-B)/2) 37. Product-to-sum formulas: cos A cos B = (1/2)(cos(A-B) + cos(A+B)), sin A sin B = (1/2)(cos(A-B) - cos(A+B)), sin A cos B = (1/2)(sin(A+B) + sin(A-B)), cos A sin B = (1/2)(sin(A+B) - sin(A-B)) 38. Hyperbolic functions: sinh x = (e^x - e^-x)/2, cosh x = (e^x + e^-x)/2, tanh x = sinh x/cosh x 39. Inverse trigonometric functions: arcsin x, arccos x, arctan x 40. Logarithmic identities: log(xy) = log x + log y, log(x/y) = log x - log y, log x^n = n log x 41. Exponential identities: e^x+y = e^x e^y, (e^x)^n = e^(nx), e^0 = 1 42. Binomial coefficients: (n choose k) = n!/(k!(n-k)!) 43. Pascal's triangle: each entry is the sum of the two entries above it 44. Fermat's little theorem: if p is a prime and a is not divisible by p, then a^(p-1) ≡ 1 (mod p) 45. Chinese remainder theorem: if m₁, m₂, ..., mₙ are pairwise coprime integers and a₁, a₂, ..., aₙ are any integers, then there exists an integer x that satisfies the system of congruences x ≡ a₁ (mod m₁), x ≡ a₂ (mod m₂), ..., x ≡ aₙ (mod mₙ) Share Share 🙏🙏🙏🙏🙏🙏🙏 🔝🔝🔝🔝🔝🔝🔝🔝🔝🔝 ▶️🌟💧@top_students1 ▶️🌟💧@top_students1 ▶️🌟💧@top_students1 🔝🔝🔝🔝🔝🔝🔝🔝🔝🔝
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📌 Biology Questions (about plants) 1. Which of the following is the primary pigment responsible for photosynthesis in plants?    a) Chlorophyll    b) Carotenoids    c) Anthocyanins    d) Xanthophylls 2. What is the function of plant stomata?    a) Absorption of water and nutrients    b) Gas exchange    c) Photosynthesis    d) Reproduction 3. Which of the following plant groups does not produce seeds?    a) Angiosperms    b) Gymnosperms    c) Ferns    d) Bryophytes 4. What is the reproductive structure of angiosperms?    a) Cone    b) Flower    c) Sporophyte    d) Sorus 5. What is the primary function of plant leaves?    a) Gas exchange    b) Photosynthesis    c) Water absorption    d) Reproduction 6. What is the purpose of plant cuticle?    a) Protection from herbivores    b) Gas exchange    c) Water retention    d) Nutrient absorption 7. Which of the following is not a characteristic of monocot plants?     a) Parallel leaf veins     b) Netted leaf venation     c) Floral parts in multiples of three     d) Fibrous root system 8. What is the main function of xylem tissue in plants?     a) Transport of water and minerals     b) Photosynthesis     c) Support and structure     d) Nutrient absorption 9. Which plant group includes mosses and liverworts?     a) Bryophytes     b) Gymnosperms     c) Angiosperms     d) Pteridophytes 10. What is the name of the male reproductive organ in a flower?     a) Pistil     b) Stamen     c) Petal     d) Sepal 11. Which of the following is an example of a gymnosperm?     a) Oak tree     b) Pine tree     c) Apple tree     d) Maple tree 12. Which plant group includes flowering plants?     a) Bryophytes     b) Gymnosperms     c) Angiosperms     d) Pteridophytes 13. What is the primary function of plant stems?     a) Photosynthesis     b) Water absorption     c) Support and transport     d) Nutrient storage 14. Which of the following is not a type of plant tissue?     a) Epidermal tissue     b) Ground tissue     c) Vascular tissue     d) Sensory tissue 15. Which plant group includes conifers and cycads?     a) Bryophytes     b) Gymnosperms     c) Angiosperms     d) Pteridophytes 16. What is the process by which water moves through a plant from roots to leaves?     a) Transpiration     b) Photosynthesis     c) Osmosis     d) Capillary action 17. Which of the following is an example of a dicot plant?     a) Wheat     b) Corn     c) Tomato     d) Sugarcane 18. What is the term for the transfer of pollen from the male reproductive organ to the female reproductive organ of a flower?     a) Pollination     b) Fertilization     c) Germination     d) Embryogenesis 19. Which of the following is not a function of plant hormones?     a) Regulating growth and development     b) Responding to environmental stimuli     c) Transporting nutrients     d) Coordinating responses to stress 20. What is the function of the root cap in plants?     a) Protection     b) Nutrient absorption     c) Gas exchange     d) Reproduction 21. Which of the following is an example of a taproot system?     a) Grass     b) Carrot     c) Lily     d) Bamboo 22. What is the name of the process by which plants release oxygen and absorb carbon dioxide?     a) Photosynthesis     b) Respiration     c) Transpiration     d) Germination 23. What is the primary function of plant flowers?     a) Gas exchange     b) Nutrient absorption     c) Reproduction     d) Water storage 24. Which of the following is not a type of plant tissue?     a) Dermal tissue     b) Ground tissue     c) Meristematic tissue     d) Nervous tissue 25. What is the term for the loss of water vapor from plant leaves?     a) Transpiration     b) Evaporation     c) Condensation     d) Precipitation https://t.me/entrance_tricks https://t.me/entrance_tricks
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Entrance Tricks ️️

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📌 Some important chemistry questions 1. What is the molarity of a solution that contains 0.5 moles of solute in 250 mL of solution?  A) 2 M   B) 1 M   C) 0.5 M   D) 5 M 2. Which of the following correctly describes molality?   A) Moles of solute per liter of solution  B) Moles of solute per kilogram of solvent   C) Moles of solvent per kilogram of solution   D) Moles of solvent per liter of solution 3. If a solution contains 0.1 moles of solute in 100 g of water, what is the molality of the solution?   A) 1 m   B) 0.1 m   C) 10 m   D) 0.01 m 4. Which of the following solutions has the highest molarity?  A) 0.5 mol/L   B) 1.0 mol/L   C) 2.5 mol/L   D) 0.75 mol/L 5. The formula for calculating the number of equivalents is:  A) Moles of solute divided by the number of hydrogens  B) Moles of solute multiplied by the valence   C) Moles of solute divided by the valence   D) Moles of solute multiplied by the ionization factor 6. How many equivalents are present in 0.1 mole of H2SO4? A) 0.1 eq   B) 0.2 eq   C) 0.3 eq   D) 0.5 eq 7. The molarity of a solution can be affected by:  A) Changing the volume of the solvent   B) Changing the volume of the solute   C) Changing the temperature   D) Changing the density of the solvent 8. What is the molality of a solution that contains 0.5 moles of NaCl in 200 g of water?   A) 0.5 m   B) 2.5 m   C) 1.0 m   D) 0.25 m 9. The molality of a solution is defined as:  A) Moles of solute per liter of solution  B) Moles of solute per kilogram of solvent  C) Moles of solvent per kilogram of solution   D) Moles of solvent per liter of solution 10. Which of the following statements about molarity is true?   A) Molarity is temperature dependent    B) Molarity changes with the state of matter    C) Molarity is affected by changes in volume    D) Molarity is expressed in moles per kilogram 11. A solution of HCl with a molarity of 2 M has how many equivalents of HCl per liter?    A) 1 eq/L    B) 2 eq/L    C) 4 eq/L    D) 6 eq/L 12. Which of the following expressions represents the correct calculation for molarity?    A) Moles of solute / Moles of solvent    B) Moles of solute / Volume of solution in liters    C) Moles of solute / Mass of solute    D) Moles of solute / Mass of solvent 13. If the molarity of a solution is doubled, how will this change affect the number of equivalents present?  A) The number of equivalents will double    B) The number of equivalents will remain the same   C) The number of equivalents will be halved    D) The number of equivalents will quadruple 14. Which of the following statements is true regarding the relationship between molality and molarity?   A) Molality is always equal to molarity    B) Molality is always greater than molarity   C) Molality and molarity are independent of each other   D) Molality is temperature-dependent while molarity is not 15. When a solution is diluted by adding more solvent, how does this change typically affect the molarity?    A) The molarity decreases    B) The molarity increases    C) The molarity remains the same    D) The molarity becomes unpredictable
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Repost from N/a
🎯 Multiple-choice questions related to the Calvin cycle, C3, C4, and CAM photosynthesis pathways 📝 1. Calvin Cycle:    - Q: In the Calvin cycle, what is the first stable compound formed after CO2 fixation?      A) Glucose      B) RuBP      C) PGA      D) G3P    - Correct Answer: B) RuBP 2. C3 Plants:    - Q: C3 plants fix CO2 using which enzyme in the mesophyll cells?      A) PEP carboxylase      B) Rubisco      C) NADP reductase      D) RuBisCO activase    - Correct Answer: B) Rubisco 3. C4 Plants:    - Q: Which enzyme is responsible for carbon fixation in mesophyll and bundle sheath cells in C4 plants?      A) PEP carboxylase      B) Rubisco      C) ATP synthase      D) NADP reductase    - Correct Answer: A) PEP carboxylase 4. CAM Plants:    - Q: CAM plants open stomata during which part of the day?      A) Morning      B) Noon      C) Evening      D) Night    - Correct Answer: D) Night 5. Calvin Cycle:    - Q: How many molecules of PGA are produced for every three molecules of CO2 fixed in the Calvin cycle?      A) 1      B) 2      C) 3      D) 6    - Correct Answer: C) 3 6. C3 Plants:    - Q: In C3 plants, where does the Calvin cycle occur?      A) Mesophyll      B) Bundle sheath      C) Stomata      D) Xylem    - Correct Answer: A) Mesophyll 7. C4 Plants:    - Q: What is the primary function of the bundle sheath cells in C4 plants?      A) Photosynthesis      B) CO2 fixation      C) Water uptake      D) Nutrient transport    - Correct Answer: B) CO2 fixation 8. CAM Plants:    - Q: CAM plants exhibit a form of photosynthesis adapted for:      A) Night conditions      B) High light intensity      C) Waterlogged conditions      D) Dry and hot environments    - Correct Answer: D) Dry and hot environments 9. Calvin Cycle:    - Q: Which molecule is regenerated at the end of the Calvin cycle to begin another cycle?      A) RuBP      B) PGA      C) G3P      D) Glucose    - Correct Answer: A) RuBP 10. C4 Plants:     - Q: C4 plants are more efficient than C3 plants under conditions of:       A) High light intensity       B) Low temperature       C) Low CO2 concentration       D) High humidity     - Correct Answer: C) Low CO2 concentration
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✅ Geography ✅ 550 Questions for Remedial 📄Mekidela Amba University ትምህርት ሚኒስቴር ተጨማሪ ትምህርታዊ መረጃ ለማግኘት ቻናላችን ይቀላቀሉ ‼️ https://t.me/Tmhrt_Minister https://t.me/Tmhrt_Minister
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📄BIOLOGY Questions 1. Which of the following is an example of a simple carbohydrate? a. Starch b. Cellulose c. Glucose d. Glycogen 2. Which of the following is an example of a complex carbohydrate? a. Glucose b. Sucrose c. Starch d. Fructose 3. Which of the following vitamins is water-soluble? a. Vitamin A b. Vitamin D c. Vitamin E d. Vitamin C 4. Which of the following minerals is important for bone health? a. Iron b. Calcium c. Zinc d. Selenium 5. Which of the following trace minerals is required for the synthesis of thyroid hormones? a. Iron b. Zinc c. Iodine d. Copper 6.  Which of the following is a condition that can occur due to a lack of carbohydrates in the diet? a. Diabetes b. Obesity c. Anemia d. Ketosis 7. Which of the following is a common symptom of iron deficiency? a. Diarrhea b. Anemia c. Night blindness d. Beriberi 8. An elderly man complains of poor night vision. Ophthalmic exam reveals corneal lesions and retinal hemorrhages. Which vitamin deficiency is most probable? a) Thiamine b) Niacin c) Vitamin A d) Vitamin C 9. What is the probability of having a child with cystic fibrosis if both parents are carriers of the gene but do not have the disease? a. 0% b. 25% c. 50% d. 75% 10. An older adult with a poor diet is diagnosed with megaloblastic anemia. Which vitamin deficiency is the most probable cause? a) Folate b) Vitamin B12 c) Vitamin C d) Vitamin D 11. Which of the following is an example of a dominant genetic disorder? a. Huntington's disease b. Sickle cell anemia c. Cystic fibrosis d. Hemophilia 12. Which of the following is a bacterial disease that is typically spread through contaminated food or water? a. Tuberculosis b. Tetanus c. Cholera d. Malaria 13. Which of the following is a common method of controlling the growth of microorganisms in food? a. Refrigeration b. Exposure to sunlight c. Adding sugar d. Washing with soap and water 14. Which of the following is a recommended way to reduce the risk of heart disease? a. Smoking cigarettes b. Eating a high-fat diet c. Regular exercise d. Avoiding fruits and vegetables 15. A 4-year-old child is brought to the clinic with complaints of bone pain and difficulty walking. Physical examination reveals bowed legs and enlarged joints. Radiographic findings show abnormal bone growth. Which vitamin deficiency is the most likely cause of these symptoms? A. Marasmus B. Scurvy C. Rickets D. Kwashiorkor ትምህርት ሚኒስቴር ተጨማሪ ትምህርታዊ መረጃ ለማግኘት ቻናላችን ይቀላቀሉ ‼️ https://t.me/Tmhrt_Minister https://t.me/Tmhrt_Minister
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