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Cell biology
Biological molecules
Organisation
Infection and response
Energy transfers (a2 only)
Homeostasis and response
Responding to change (a2 only)
The control of gene expression (a-level only)
Substance exchange
Bioenergetics
Genetic information & variation
Inheritance, variation and evolution
Genetics & ecosystems (a2 only)
Ecology
Cells
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1c the tudors: england, 1485-1603
1l the quest for political stability: germany, 1871-1991
Inter-war germany
1f industrialisation and the people: britain, c1783-1885
Britain & the wider world: 1745 -1901
2n revolution and dictatorship: russia, 1917-1953
2j america: a nation divided, c1845-1877
The cold war
World war two & the holocaust
World war one
Medieval period: 1066 -1509
The fight for female suffrage
2m wars and welfare: britain in transition, 1906-1957
2d religious conflict and the church in england, c1529-c1570
Britain: 1509 -1745
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10/06/2022
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COORDINATE GEOMETRY 1- Coordinates Two points (x₁, y₁) and (x₂, 1₂) es (-3.5) (2,8) 1₂ - Y₁ eig. x₂-x, 1 GRADIENT = AY Ax Midpoint is the anwage point (+24317) Distance -342 2 is found using Pyriagoras Theorem 2 √ (x₂-x,₁)² + (Yz - Y₁)" T= mx + c m=4 Y = 4x +C 8-53 2-(-3) If 3 points, A, B and C ke on the same straight line, they have the same gradient. 548 2- Straight Lines - Finding Equations The general equation of a strought line is: y = mx + c L M is the gradient LC is PHC y-intercept To find the equation you need two things Ime gradient, in L any point on the whe 5- 4(-2) + C 5--8-C C (3 ·2·3(-2.5) -> worked example: The live x has an equation Y = 4x + 5. Find the equation of line ĭ parallel tox which passes through the point. (-2,5). $ Y 4x + 13 ✓ 3- Strought Lines Drawing Graphs Y = mx + c Por con me i-axis ·go 1 avoSS m up (repeat) From W • From ax + b1 =C • Put XO to Find Y - intercept • Put Y- O to find x-intercept Worked comple On me axes below ovaw the lines Y 3x - 1 and 5x - SY IS H 6- 5- 21 11 TO Sim 34m N 5 y = 3x - 1 3x +31-15 When 19 917 15. . ۲۰ ۸ است 3x+15 X-5 - 4. Perpendiculas Lines What are perpendicular lines? Perpendicuar tires do meet calm other and what they do the two lines form...
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a right augle-ic. they meet out 90° Gradients m, • Use m₁ = 2 m₂ = -1 2 m₂ = -1/1/201 and m₂ m₂ que popendiculas if: m, xm, -1 Worked Example The live I was equation 1-2x 2 Find an equation of the line perpendicular to which passes twough the point (2,-3). to find a perpendicular gradient Y'. — xrc - 3-LX2 + C 2 C-3-(-1). =-2 2 > Y = -1x -2 ✓