All immunoassay methods are based on:

Accreditation agencies of laboratories require documented testing of reagent water which includes testing for:

Small cells function more effectively, because as cells become larger their surface area to volume ratio

The distinctive feature of chloroplasts is that they contain a green pigment called

Plant cells often have a large membrane-bound sac that is used for storing water and other substances. This organelle is called a

Which of the following is NOT a distinguishing characteristic of prokaryotic cells?

An animal and a plant cell are similar in all of the following ways EXCEPT _____.

The genetic material of which kind of cells is included in a single, circular molecule of DNA?

Flattened sacks of membranes apparently involved in the packaging and export of molecules synthesized in the cell are known as

In bacteria, fungi, and plants the high internal pressure generated by osmosis is counteracted by the mechanical strength of their