Author/Creation: Candice Chovanec Melzow, 2002.
Other Formats: PDF 93KB
- Abbreviations should be avoided except when using terms common to science. These terms include RNA, DNA, ATP, units of measurement (g, cm) and chemical formulas.
- Acronyms should be used only after stating the full scientific
name of the substance once. The acronym should be introduced along with the first
mention of the full term.
Example: “The U.S. Environmental Protection Agency (EPA) is devoted to saving species endangered by human carelessness.”
- Chemical elements are not proper nouns and should not be capitalized. When using the chemical symbol, only the first letter should be capitalized: carbon (C), iron (Fe), calcium (Ca).
- Contractions, such as didn’t, can’t and doesn’t, should never be used in formal writing in the sciences.
- Footnotes should not be used. Instead, use in-text citations.
- Illustrations should clearly depict information to the reader.
- Numbers are tricky to report. The general rule is to write out numbers below 10 as words (ex: one) and express numbers above 10 (ex: 10) as numerals.
- Scientific names consisting of genus and species should be underlined or italicized; only the genus should be capitalized. For example, Homo sapiens or Canis familiaris.
- Singular and plural forms of some scientific terms are confusing.
Singular Plural hypothesis hypotheses datum data appendix appendices phenomenon phenomena criterion criteria axis axes
Make sure that verb tenses agree with these unusual singular and plural forms:
Incorrect: The criterion are. . . ; the axes are. . . ; the data are. . .
Corrrect: The criterion is. . . ; the axis is. . . ; the datum is. . .
- Tables and figures are useful for displaying large amounts of quantitative information. They help the reader organize information and internalize it. Be sure that the title of the table or figure clearly describes its contents.
- Tenses The past tense should be used when describing methods and results. The present tense is used in your personal conclusion and when stating accepted facts.
- Units of measurement should be metric or SI (International System).
Write out numbers nine and under and use numerals to represent numbers 10 and over.
Incorrect: The fetal pig was eighteen inches in length.
Correct: The fetal pig was 18 inches in length.
Remember that there are exceptions to this rule.
Use Numerals to Express
Values under 10 that are compared to or used in the same sentence with numbers over 10.
Incorrect: There were 23 red-eyed fruit flies and five white-eyed fruit flies.
Correct: There were 23 red-eyed fruit flies and 5 white-eyed fruit flies.
Values preceding a unit of measurement
Incorrect: seven cm, eight grams
Correct: 7 cm, 8 g
Values representing percentages, ratios, fractions and decimals
Incorrect: two percent, three to four, five-sixths, seven hundredths
Correct: 2%, 3:4, 5/6, .07
Values representing the number of participants, date, ages or points on a scale
Incorrect: eight subjects were interviewed, ages six to nine, scored three on a six point scale
Correct: 8 subjects were interviewed, ages 6 to 9, scored 3 on a 6 point scale
Use Words to Express
Numbers that begin a sentence.
Incorrect: 12 fetal pigs were dissected. . .
Correct: Twelve fetal pigs were dissected. . .
Conflict Between Rules
When there is a conflict between these rules, such as when listing a specific amount (typically written as a numeral) located at the beginning of the sentence (typically expressed in words), use this example to guide you.
Incorrect: 2.00 g of hydrochloric acid was used to determine. . .
Correct: Hydrochloric acid (2.00 g) was used to determine. . .
Resources used to compile this checklist include
George Mason University: Department of Biology. A guide to writing in the biological
sciences. Retrieved June 3, 2002 from http://classweb.gmu/biologyresources/
writingguide/PracticalTips.htm (Material no longer available at this link.)
McLeod, P. (2002). PSYC 2023 research design and analysis: Scientific report writing.
Retrieved August 1, 2002 from http://plato.acadiau.ca/courses/psyc/
mcleod/2023Research /apaformat.general.htm (Material no longer available at this link.)
McMillan, V.E. (2001). Writing papers in the biological sciences. Boston: Bedford/St. Martin’s.
Reimer, B. (2002). Preparing your PHED 220 lab report. Retrieved August
1, 2002 from http://web.mala.bc.ca/reimer/
220/Labs/lab_report_guide.htm (Material no longer available at this link.)
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