Movement
Respiration
Sensitivity
Growth
Reproduction
Excretion
Nutrition
Species
Binomial system
Tissue
Organ
Organ system
Diffusion
Osmosis
Active transport
Catalyst
Enzyme
Photosynthesis
Limiting factor
Ingestion
Mechanical digestion
Chemical digestion
Assimilation
Absorption
Egestion
Transpiration
Translocation
Pathogens
Transmissible disease
Active immunity
Aerobic respiration
Anaerobic respiration
Deamination
Synapse
Sense organs
Hormone
Homeostasis
Gravitropism
Phototropism
Drug
Asexual reproduction
Sexual reproduction
Fertilization
Self-pollination
Cross-pollination
Sexually transmitted infections (STI)
Inheritance
Chromosome
Gene
Allele
Haploid nucleus
Diploid nucleus
Mitosis
Meiosis
Genotype
Phenotype
Homozygous
Heterozygous
Dominant
Recessive
Sex-linked characteristics
Variation
Gene mutation
Adaptive feature
Fitness
Adaptation
Food chain
Trophic level
Food web
Producer
Consumer
Herbivore
Carnivore
Decomposers
Population
Community
Ecosystem
Genetic engineering
Sustainable development