Used in Biology: G Gender A Gene pool R Absorption Genetic cross Regulate Active Transport Genetic recombination Reliability Allele Genotype Renewable Amino Acid Glucose Reproduce Atmospheric H Research question ATP Heterozygous S Aquatic Homozygous Sensor B Honesty Skeptical Bacteria Hormone Solubility Bacterium Host Solution (aqueous) Bi-Layer Hydrosphere Species Biodiversity I Sperm Biomass Invasive Spherical C L Spinal cord Carbon cycle Lipid bi-layer Sore Carbon dioxide M Stamen Carbohydrates Mammals Succession Cellular respiration Meiosis Sustainability Chlorophyll Microorganism Systematic observation Combustion Mitosis T Complementary mRNA Theory Computer simulation Mutate Toxin Concentration Mutation Trade-off Constraint N Trait Contraction Native Transmission Criteria Natural Selection Trend Cytoplasm Negative Feedback tRNA D Neurological system U Diffusion Niche Unintended consequence Divergent Nitrogen cycle V Diversity Non-native Vacuole DNA Nonrenewable Validate E Nucleic acid Validity Embryo Nucleotides Virus Endagered Endocrine system O Energy chain Organelle Enzyme Osmosis Equilibrium Ova Estuary Ozone Expansion P Experimental control Parasite condition Passive transport Pesticide F pH Facilitated diffusion Phenotype Fatty acids Photosynthesize Finite Pistil Fossil fuels Pollinator Fungus Population density Positive Feedback Principle Protein