Biology Maths Paper 2
1 Gradient Gradient = Change in y
Change in x
2 Prefixes and multiple tera (T) = 1012 – giga (G) = 109 – mega (M) = 106 – kilo (k) = 1000 – deci (d) = 0.1 –
of unit centi (c) = 0.01 – milli (m) = 0.001 – micro (μ) = 10-6 – nano (n) = 10-9 – pico = 10-12
3 Uncertainty Uncertainty = Range
2
4 Total magnification Total magnification = Eyepiece lens magnification × objective lens magnification
5 Image size Image size = Magnification × Real size
6 Rate of reaction Rate of reaction (cm3/s) = amount of product produced (cm3) ÷ time taken (s)
Rate of reaction (cm3/s) = amount of reactant used up (cm 3) ÷ time taken (s)
7 Amount of energy a Energy in Foods (J) = Mass of water (g) × Temperature of water (˚C) × 4.2
food contains
8 Energy per gram of Energy per gram of food (J) = Energy in food (J)
food Mass of food (J)
9 Percentage change in Percentage change = Final mass (g) – Initial mass (g) × 100
mass Initial mass (g)
10 Photosynthesis Carbon dioxide + water Glucose + oxygen
equation 6CO2 + 6H2O C6H12O6 + 6O2
11 Light intensity and Light intensity ∝ 1 .
distance Distance (d)2
12 Rate of transpiration Distance moved by bubble
(transpirometer/ Time
potometer)
13 BMI Body Mass Index = Mass (kg)
(height(m)) 2
14 Body mass Index <18.5 = Underweight -- 15.5 – 24.9 = “normal” -- 2 – 29.9 = Overweight
weight descriptions 30 – 40 = moderately obese -- >40 = severely obese
15 Waist-hip-ratio Waist-to-hip ratio = Waist circumference (cm)
Hip circumference (cm)
16 Waist-hip-ratio weight >1.0 for males & > 0.85 for females = abdominal obesity > healthy ratio
descriptions
17 Surface area: volume Surface area (cm2)
ratio Volume (cm3)
18 Fick’s law Rate of diffusion ∝ Surface area × Concentration difference
Thickness of membrane
19 Anaerobic respiration Glucose Lactic acid
in animals
20 Anaerobic respiration Glucose Ethanol + Carbon dioxide
in plants
21 Cardiac output Cardiac output (cm3/min) = heart rate (bpm) × stroke volume (cm 3)
22 Population size using Population size = Number of organisms in all quadrats × Total area of organism’s habitat
quadrats Total area of quadrats
23 Efficiency in biomass Efficiency = Energy transferred to next level × 100
tables Energy available at previous level
1 Gradient Gradient = Change in y
Change in x
2 Prefixes and multiple tera (T) = 1012 – giga (G) = 109 – mega (M) = 106 – kilo (k) = 1000 – deci (d) = 0.1 –
of unit centi (c) = 0.01 – milli (m) = 0.001 – micro (μ) = 10-6 – nano (n) = 10-9 – pico = 10-12
3 Uncertainty Uncertainty = Range
2
4 Total magnification Total magnification = Eyepiece lens magnification × objective lens magnification
5 Image size Image size = Magnification × Real size
6 Rate of reaction Rate of reaction (cm3/s) = amount of product produced (cm3) ÷ time taken (s)
Rate of reaction (cm3/s) = amount of reactant used up (cm 3) ÷ time taken (s)
7 Amount of energy a Energy in Foods (J) = Mass of water (g) × Temperature of water (˚C) × 4.2
food contains
8 Energy per gram of Energy per gram of food (J) = Energy in food (J)
food Mass of food (J)
9 Percentage change in Percentage change = Final mass (g) – Initial mass (g) × 100
mass Initial mass (g)
10 Photosynthesis Carbon dioxide + water Glucose + oxygen
equation 6CO2 + 6H2O C6H12O6 + 6O2
11 Light intensity and Light intensity ∝ 1 .
distance Distance (d)2
12 Rate of transpiration Distance moved by bubble
(transpirometer/ Time
potometer)
13 BMI Body Mass Index = Mass (kg)
(height(m)) 2
14 Body mass Index <18.5 = Underweight -- 15.5 – 24.9 = “normal” -- 2 – 29.9 = Overweight
weight descriptions 30 – 40 = moderately obese -- >40 = severely obese
15 Waist-hip-ratio Waist-to-hip ratio = Waist circumference (cm)
Hip circumference (cm)
16 Waist-hip-ratio weight >1.0 for males & > 0.85 for females = abdominal obesity > healthy ratio
descriptions
17 Surface area: volume Surface area (cm2)
ratio Volume (cm3)
18 Fick’s law Rate of diffusion ∝ Surface area × Concentration difference
Thickness of membrane
19 Anaerobic respiration Glucose Lactic acid
in animals
20 Anaerobic respiration Glucose Ethanol + Carbon dioxide
in plants
21 Cardiac output Cardiac output (cm3/min) = heart rate (bpm) × stroke volume (cm 3)
22 Population size using Population size = Number of organisms in all quadrats × Total area of organism’s habitat
quadrats Total area of quadrats
23 Efficiency in biomass Efficiency = Energy transferred to next level × 100
tables Energy available at previous level
