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reviewer
writer
1. what is the writer's main purpose or theme? does the structure of the paper complement its
purpose and content? explain in narrative form as opposed to a yes/no format.
2. how does the introduction catch the reader's attention or generate interest in the topic? if it
does not, how can this be accomplished?
3. what organization format is used for the body paragraphs? is it consistently used for all the
information? are any variations justified?
4. is each main point clearly explained? what type of support is used?
5. what type of support information could be added to clarify the main points?
6. does the conclusion summarize the main ideas? if not, how can this be accomplished?
7. are grammar, punctuation, sentence structure, word usage, etc. correct? did you see any errors
that need to be fixed?
8. were in-body citations and references properly used?
9. what is the strongest part of the paper? why is it good?
10. what can be improved? how can it be better?

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.

Astudent from one of the research labs is having trouble preparing a slide for examination and photographing. the bacterial slide that he has brought to you was prepared using a commercially purchased stain. he has asked for your in determining what he is doing wrong so that he can change the lab protocols and continue on with his project. after examining the slide under oil immersion, you determine that no bacteria are present even though the student is able to show you the culture he used to make that slide that has visible growth in the liquid medium. which of the following statements does not explain the fact that there are no bacteria present on the student’s slide? by not allowing a glass slide to completely air dry before heat fixation, the flame will cause the surrounding water to boil and this will damage the bacterial cell. overheating during the fixation step boiled the water within the bacterial cells and resulted in the cells bursting. insufficient heating of the slide did not drive out the thin layer of water and this resulted in minimal bonding between the bacteria and the glass slide. rinsing with alcohol during the washing step stripped the bacteria off the glass slide. rinsing with alcohol during the washing step stripped the bacteria off the glass slide.

Chitin is a chemical component of the cell walls