An abstract is a brief summarizing statement, usually between 75 and 150 words long. It gives thereader a synopsis of the problem, method, results, and conclusions of yourdocument. The abstract takes the form of a paragraph, usually with 5-10 sentences. It appears atthe top of a journal article, just under the title, or on the page following the title page of a report. In the latter instance, the abstract appears on a page by itself.
Quick Answer. A vacuole is a fluid-filled sac that stores food and water in cells. Vacuoles are most commonly found in plant cells, but they also exist in some bacteria and animal cells. Continue Reading.
A vacuole is a cell organelle found in a number of different cell types. Vacuoles are fluid-filled, enclosed structures that are separated from the cytoplasm by a single membrane. They are found mostly in plant cells and fungi.However, some protist, animal cells, and bacteria also contain vacuoles. Storage-vacuoles store important minerals, water, nutrients, ions, waste products, small molecules, enzymes, and plant pigments. 2  Molecule degradation-the internal acidic environment of a vacuole aids in the degradation of larger molecules sent to the vacuole for destruction.