circadian rhythm

photoperiodism

pasteurisation

memory lymphocyte

monoclonal antibodies

glomerulus

filtration ( kidneys )

bowman's capsule

convoluted tubules

loop of Henle

osmoregulation

phenotype

genotype

pathogen

vaccination

metabolic reaction

nephron

gamete

allele

behaviour

reflex

innate

classical conditioning

habitation

operant conditioning

social behaviour

imprinting

co- evolution