It is not as useful for science writing as for writing in the social sciences and humanities, but still provides excellent guidelines. A Short Guide to Writing about Biology . Longman, Inc, New York. This is a short and readable guide to writing biology essays. Three copies of this book are on reserve in the Science library, under Biology 216 at the desk.
Nothing makes writing look worse than spelling mistakes.
Use your spell checker. But see Grammar 2. Avoid run-on sentences, and paragraphs that are too long. Avoid the passive voice, it sounds weak and pathetic. Muscle cells are poisoned by snake venom.