why were peregrine falcons endangered during the mid 1900s a chemical pesticide called ddt was widely used to prevent insect damage to crops ddt worked its way up the food chain when poisoned insects were eaten by smaller birds that were then eaten by larger birds including peregrine falcons
What types of objects can be studied with a light microscope what types can be studied with an electron microscope? Electron microscopes are used to observe a wide range of biological and inorganic... What microscope is used for a bacteria cell? The Electron Microscopes which is a modern electron microscopes can magnify up to... Which microscopic object is the smallest an amoeba, virus, bacteria, or human skin cell? A virus is smaller than a bacteria, amoeba or a human skin cell. A typical virus... What type of microscope study viruses in bacteria? Virology is the study of viruses, while bacteriology is the study of bacteria.... See All Questions
Add the sample to the slide. You can use the Gram stain method to help identify bacteria present in medical samples, or bacterial cultures grown in a petri dish. In order for the Gram stain to be useful, add a thin layer of the sample on the stain. A sample under 24 hours old is recommended, as older bacteria may have damaged cell walls that respond less predictably to gram staining. If using a tissue sample, add 1â2 drops onto the glass slide.