Paper 1 Equations

Question 1

Microscopy

Answer 1

total magnification = eye piece lens x objective lens

Question 2

Magnification

Answer 2

image size / actual image

Question 3

Osmosis

Answer 3

% change in mass = (difference in mass / starting mass) x 100

Question 4

BMI

Answer 4

mass(kg) / (height(m))^2

Question 5

Waist to hip ratio

Answer 5

waist circumference (cm) / hip circumference (cm)