| A A A A A | letter |
| A site | chapter 17 | bio 113 | heading |
| A Tour of the Cell | chapter 7 | bio 113 | chapter title |
| Abiotic component | chapter 50 | bio 114 | heading |
| ABO blood group | chapter 14 | bio 113 | heading |
| Absolute dating | chapter 25 | bio 114 | heading |
| Acetyl CoA | chapter 9 | bio 113 | heading |
| Acids, nucleic | chapter 5 | bio 113 | heading |
| Acrasiomycota | chapter 28 | bio 114 | heading |
| Actin | chapter 7 | bio 113 | heading |
| Actinopterygii, subclass | chapter 34 | bio 114 | heading |
| Action of natural selection | chapter 23 | bio 114 | heading |
| Activation energy | chapter 6 | bio 113 | heading |
| Activation, mRNA | chapter 19 | bio 113 | heading |
| Activation, protein | chapter 19 | bio 113 | heading |
| Activators | chapter 6 | bio 113 | heading |
| Active site | chapter 6 | bio 113 | heading |
| Active transport | chapter 8 | bio 113 | heading |
| Active versus passive transport | chapter 8 | bio 113 | heading |
| Activity, enzyme | chapter 6 | bio 113 | heading |
| Adapt, why? | chapter 18 | bio 113 | heading |
| Adaptation | chapter 18 | bio 113 | heading |
| Adaptation | chapter 22 | bio 114 | heading |
| Adaptation | chapter 50 | bio 114 | heading |
| Adaptations, terrestrial, plants | chapter 29 | bio 114 | heading |
| Adaptive landscapes | chapter 24 | bio 114 | heading |
| Adaptive radiation and mass extinction | chapter 25 | bio 114 | heading |
| Adaptive zone | chapter 25 | bio 114 | heading |
| Addition, law of | chapter 14 | bio 114 | heading |
| Additional mechanisms of catalysis | chapter 6 | bio 113 | heading |
| Adenine | chapter 5 | bio 113 | heading |
| Adenosine diphosphate | chapter 6 | bio 113 | term |
| Adenosine monophosphate | chapter 6 | bio 113 | term |
| Adenosine triphosphate | chapter 6 | bio 113 | heading |
| Adhesion | chapter 3 | bio 113 | heading |
| ADP | chapter 6 | bio 113 | term |
| Advantage, heterozygous | chapter 23 | bio 114 | heading |
| Age structure | chapter 52 | bio 114 | heading |
| Agent, oxidizing | chapter 9 | bio 113 | heading |
| Agent, reducing | chapter 9 | bio 113 | heading |
| Agnatha, class | chapter 34 | bio 114 | heading |
| Agonistic behavior | chapter 51 | bio 114 | heading |
| Alelle frequencies, calculating | chapter 23 | bio 114 | heading |
| Algal life cycles | chapter 28 | bio 114 | heading |
| Allele | chapter 14 | bio 113 | heading |
| Allele frequencies from genotype frequencies, calculating them | chapter 23 | bio 114 | heading |
| Allele, fixed | chapter 23 | bio 114 | heading |
| Allele, homologous | chapter 14 | bio 113 | heading |
| Alleles, complete dominance | chapter 14 | bio 113 | heading |
| Alleles, dominant | chapter 14 | bio 113 | heading |
| Alleles, dominant, homozygous | chapter 14 | bio 113 | heading |
| Alleles, incomplete dominance | chapter 14 | bio 113 | heading |
| Alleles, multiple | chapter 14 | bio 113 | heading |
| Alleles, recessive | chapter 14 | bio 113 | heading |
| Alleles, recessive, homozygous | chapter 14 | bio 113 | heading |
| Alleles, segregation of | chapter 14 | bio 113 | heading |
| Allocation of limited resources | chapter 52 | bio 114 | heading |
| Allocation, principle of | chapter 50 | bio 114 | heading |
| Allopatric speciation | chapter 24 | bio 114 | heading |
| Allopatric speciation, scenario for | chapter 24 | bio 114 | heading |
| Allopolyploid | chapter 24 | bio 114 | heading |
| Allosteric inhibitors | chapter 6 | bio 113 | heading |
| Alpha helix | chapter 5 | bio 113 | heading |
| Alternation of generations | chapter 13 | bio 113 | heading |
| Alternation of generations | chapter 28 | bio 114 | heading |
| Altruism | chapter 51 | bio 114 | heading |
| Altruism, reciprocal | chapter 51 | bio 114 | heading |
| Amino acids | chapter 5 | bio 113 | heading |
| Amino group | chapter 4 | bio 113 | heading |
| Aminoacyl-tRNA-synthetases | chapter 17 | bio 113 | heading |
| Ammonification | chapter 54 | bio 114 | heading |
| Amniote egg | chapter 34 | bio 114 | heading |
| Amniotes | chapter 34 | bio 114 | heading |
| Amoebas | chapter 28 | bio 114 | heading |
| AMP | chapter 6 | bio 113 | term |
| AMP, cyclic | chapter 11 | bio 113 | heading |
| Amphibians | chapter 34 | bio 114 | heading |
| Amphipathic | chapter 8 | bio 113 | term |
| Amplification, signal | chapter 11 | bio 113 | heading |
| Amylopectin | chapter 5 | bio 113 | heading |
| Amylose | chapter 5 | bio 113 | heading |
| An Introduction to Ecology and the Biosphere | chapter 50 | bio 114 | chapter title |
| An Introduction to Metabolism | chapter 6 | bio 113 | chapter title |
| Anabolism | chapter 6 | bio 113 | heading |
| Anaerobes, facultative | chapter 9 | bio 113 | heading |
| Anaerobic generation of ATP | chapter 9 | bio 113 | heading |
| Anagenesis | chapter 24 | bio 114 | heading |
| Analysis of cloned DNA | chapter 20 | bio 113 | heading |
| Anaphase | chapter 12 | bio 113 | heading |
| Anaphase I | chapter 13 | bio 113 | heading |
| Anatomy, comparative | chapter 22 | bio 114 | heading |
| Ancestor, universal | chapter 26 | bio 114 | heading |
| Aneuploidy | chapter 15 | bio 113 | heading |
| Angiosperms | chapter 30 | bio 114 | heading |
| Angiosperms, life cycle of | chapter 30 | bio 114 | heading |
| Animal cells and tonicity | chapter 8 | bio 113 | heading |
| Animal defenses against predation | chapter 53 | bio 114 | heading |
| Animal Evolution, Introduction to | chapter 32 | bio 114 | chapter title |
| Animals | chapter 32 | bio 114 | heading |
| Anisogamy | chapter 28 | bio 114 | heading |
| Annelida, phylum | chapter 33 | bio 114 | heading |
| Antherideum | chapter 29 | bio 114 | heading |
| Anthophyta, division | chapter 30 | bio 114 | heading |
| Anthropoidea, suborder | chapter 34 | bio 114 | heading |
| Anticodon | chapter 17 | bio 113 | heading |
| Antiparallel strands | chapter 16 | bio 113 | heading |
| Apicomplexa | chapter 28 | bio 114 | heading |
| Aposematic coloration | chapter 53 | bio 114 | heading |
| Apparatus, Golgi | chapter 7 | bio 113 | heading |
| Appendages, jointed | chapter 33 | bio 114 | heading |
| Aqueous solution | chapter 3 | bio 113 | heading |
| Archaebacteria metabolism | chapter 27 | bio 114 | heading |
| Archegoneum | chapter 29 | bio 114 | heading |
| Archezoa | chapter 28 | bio 114 | heading |
| Arthropoda, phylum | chapter 33 | bio 114 | heading |
| Artificial selection | chapter 22 | bio 114 | heading |
| Ascomycota gametangia | chapter 31 | bio 114 | heading |
| Ascomycota, Division | chapter 31 | bio 114 | heading |
| Asexual reproduction | chapter 13 | bio 113 | heading |
| Assimilation, nitrogen | chapter 54 | bio 114 | heading |
| Associative learning | chapter 51 | bio 114 | heading |
| Assortative mating | chapter 23 | bio 114 | heading |
| Assortment, independent | chapter 14 | bio 113 | heading |
| Assortment, independent | chapter 15 | bio 113 | heading |
| Aster | chapter 12 | bio 113 | heading |
| Asymetry, membrane | chapter 8 | bio 113 | heading |
| Atmosphere, reducing | chapter 26 | bio 114 | heading |
| ATP | chapter 6 | bio 113 | heading |
| ATP Bookkeeping (cellular respiration) | chapter 9 | bio 113 | heading |
| ATP catabolism | chapter 6 | bio 113 | heading |
| ATP generation, anaerobic | chapter 9 | bio 113 | heading |
| ATP hydrolysis | chapter 6 | bio 113 | heading |
| ATP is a product of catabolism | chapter 6 | bio 113 | heading |
| ATP synthase | chapter 9 | bio 113 | heading |
| ATP works, how | chapter 6 | bio 113 | heading |
| Attachments to plasma membrane | chapter 7 | bio 113 | heading |
| AUG | chapter 17 | bio 113 | heading |
| Australopithecus, genus | chapter 34 | bio 114 | heading |
| Autopolyploidy | chapter 24 | bio 114 | heading |
| Autosomal dominant traits | chapter 14 | bio 113 | heading |
| Autosomal recessive traits | chapter 14 | bio 113 | heading |
| Autosome | chapter 13 | bio 113 | heading |
| Autotroph | chapter 10 | bio 113 | heading |
| Autotrophs | chapter 27 | bio 114 | heading |
| Availability to RNA polymerase | chapter 19 | bio 113 | heading |
| Avery, MacLeod, and McCarty, 1944 | chapter 16 | bio 113 | heading |
| Aves, class | chapter 34 | bio 114 | heading |
| Avoidance of punishment | chapter 51 | bio 114 | heading |