| Text | Length |
| Bio class | 9 |
| Bio class abbr. | 15 |
| Bio class letters | 17 |
| Bio class locale, often | 23 |
| Bio class ltrs. | 15 |
| Bio class setting | 17 |
| Bio datum | 9 |
| Bio ending | 10 |
| Bio figure | 10 |
| Bio for a Looney Tunes coyote? | 30 |
| Bio fuel source | 15 |
| Bio info | 8 |
| Bio kin | 7 |
| Bio lab creation | 16 |
| Bio lab gel | 11 |
| Bio lab gelatin | 15 |
| Bio lab instrument | 18 |
| Bio lab specimen | 16 |
| Bio lab subject | 15 |
| Bio lab subjects | 16 |
| Bio major's expense | 23 |
| Bio majors' degs. | 21 |
| Bio of sorts | 12 |
| Bio of the team lush? | 21 |
| Bio relative | 12 |
| Bio stat | 8 |
| Bio subjects | 12 |
| Bio title word, often | 21 |
| Bio word | 8 |
| Bio word, sometimes | 19 |
| Bio-Bio locale | 14 |
| Bio. and chemistry e.g. | 24 |
| Bio. branch | 11 |
| Bio. class | 10 |
| Bio. evidence | 13 |
| Bio. or chem. | 13 |
| Bio. read with a sigh | 21 |
| Bio. strand | 11 |
| Bio., chem., etc. | 17 |
| Bio., e.g. | 10 |
| Bio., for one | 13 |
| Biochem focus | 13 |
| Biochem strand | 14 |
| Biochemical acid | 16 |
| Biochemical arrangement | 23 |
| Biochemical blueprint | 21 |
| Biochemical catalyst | 20 |
| Biochemical compound | 20 |
| Biochemical energy source, for short | 36 |
| Biochemical enzyme, briefly | 27 |
| Biochemical initials | 20 |
| Biochemical solid | 17 |
| Biochemical sugar | 17 |
| BIOCHEMIST | 10 |
| Biochemist's concern | 24 |
| Biochemist's gel | 20 |
| Biochemist's letters | 24 |
| Biochemistry abbr. | 18 |
| Biochemistry initials | 21 |
| Biochemistry procedures | 23 |
| Biochemists study them | 22 |
| Biodegradable pipe material | 27 |
| Biodegrade | 10 |
| Biodegrade, say | 15 |
| Biodiesel oil source | 20 |
| Biodiesel source | 16 |
| Biodiverse habitat | 18 |
| Biodiversity setting | 20 |
| Biodrama about Capote | 21 |
| Bioelectric creatures | 21 |
| Bioelectric critters | 20 |
| Bioelectric critters, perhaps | 29 |
| Bioelectric fish | 16 |
| Bioelectric fish, sometimes | 27 |
| Bioelectric sea creature | 24 |
| Bioelectric swimmer | 19 |
| Bioelectric swimmers | 20 |
| Bioengineered cross between a bird and a mammal? | 48 |
| Bioethics position | 18 |
| Bioethics stance | 16 |
| Biofuel | 7 |
| Biofuel from cows | 17 |
| Biofuel option | 14 |
| Biofuel source | 14 |
| Biog. note for Plutarch | 23 |
| Biogenesis scandal nickname | 27 |
| Biogeographer's concern, broadly: Abbr. | 43 |
| Biographer | 10 |
| Biographer Arthur or Barbara | 28 |
| Biographer biographized in "Poison Pen" | 49 |
| Biographer Edel | 15 |
| Biographer Edwards | 18 |
| Biographer Fraser | 17 |
| Biographer Leon | 15 |
| Biographer Leon and family | 26 |
| Biographer Lofts and namesakes | 30 |
| Biographer Ludwig | 17 |
| Biographer Maurois | 18 |
| Biographer Miller | 17 |
| Biographer of a two-time Nobelist | 33 |
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