The Expected Outcome of an Oxidase Test Performed to Identify

question 41

Multiple Choice

The expected outcome of an oxidase test performed to identify Neisseria menigitidis is _______.

• A) cells colored black when stained and viewed under the microscope
• B) a zone of clearing surrounding colonies on chocolate agar
• C) the appearance of bubbles when cells are mixed with hydrogen peroxide
• D) a color change of a colony from tan to black when oxidase reagent is added
• E) the amplification of the oxi gene as detected on an agarose gel

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Definitions:

Prenatal Activity

Activities or behaviors exhibited by a fetus in the womb, including movements and responses to different stimuli.

Zygote

The initial cell formed when a new organism is produced by sexual reproduction, resulting from the union of sperm and egg cells.

Second Trimester

The period of pregnancy from the 13th to the 26th week, often marked by a decrease in pregnancy symptoms and the growth of the fetus becoming more evident.

Fetus

A fetus is a developing stage of a mammal after the embryonic phase and before birth, in humans typically from the ninth week of pregnancy until birth.