When Practicing Aseptic Culturing Techniques, It Is Important to Keep

question 9

Multiple Choice

When practicing aseptic culturing techniques, it is important to keep all of the following in mind except

• A) the media used to grow the specimen is sterile.
• B) as long as nothing unintended touches the media, there will be no contamination.
• C) all of the instruments and lab ware that directly touch the specimen is sterile.
• D) gloves and other protecting clothing may be required depending on the specimen being used.
• E) surrounding surfaces are decontaminated before and after handling cultures.

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Definitions:

Cell Membrane

The semipermeable membrane surrounding the cytoplasm of a cell, responsible for controlling the passage of substances in and out of the cell.

Substances

Materials or items with distinct physical or chemical properties.

Cytoplasm

The gel-like substance within a cell, excluding the nucleus, that contains organelles and is the site of numerous metabolic reactions.

Nucleus

A central and most important part of an object, movement, or group, forming the basis for its activity and growth, or in a biological context, the membrane-bound organelle found in eukaryotic cells that contains most of the cell's genetic material.