the ability of a microscope or telescope to measure the angular separation of images that are close together
describes a cell that does not have a nucleus or anyother membrane-covered organelles; also called bacteria.
A chemical reaction in which two molecules become covalently bonded to each other with the removal of a water molecule
a chemical process in which a compound is broken down and changed into other compounds by taking up the elements of water.
Test for reducing sugars. Sample is heated to 80ºC with reagent. If a reducing sugar is present, the reagent changes from blue to red precipitate.
an experiment whose result is already known to be positive, it is used to check that nothing went wrong during the procedure.
an experiment done with a sample/mock sample that should normally yield a negative result. It allows to check for contamination of the reagents or artifacts that would give false positive.
the process by which molecules move from an area of higher concentration to an area of lower concentration
A phenomenon that occurs in plants in an hypertonic solution. The cell loses water and shrivels, and its plasma membrane pulls away from the cell wall, usually killing the cell.
one of a series of rounded projections (or the notches between them) formed by curves along an edge (as the edge of a leaf or piece of cloth or the margin of a shell or a shriveled red blood cell observed in a hypertonic solution etc.)