if the tissue is uniform A high power diagram is then produced – a detailed image of a part of the slide. It is usually drawn to show a single cell, eg of a single cheek cell or onion cell.

Most prokaryotes are small, single-celled organisms that have a relatively simple structure. Prokaryotic cells are surrounded by a plasma membrane, but they have no internal membrane-bound ...

The dark bands indicate areas where the structure of the chromosome ... control everything from how your cells grow to how they interact with one another. A single gene can range in length from ...