Assistant Laboratory Animal Technician (ALAT) Practice Exam

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If a chemical ends in "-cide", what kind of chemical is it likely to be?

Antiseptic
Pesticide
Fungicide
Disinfectant

The correct answer is: Disinfectant

Chemicals that end with the suffix "-cide" denote a substance that is capable of killing a specific type of organism. This naming convention derives from the Latin word "caedere," which means "to kill." In the context of the options given, the correct answer refers to disinfectants that are used to eliminate harmful microorganisms on surfaces. Disinfectants are specifically formulated to kill bacteria, viruses, and other pathogens, making them essential in maintaining sterile environments. The other types of chemicals that also carry the "-cide" suffix are: - Antiseptics, which are used on living tissues to prevent infection. - Pesticides, which are designed to kill pests, including insects and weeds. - Fungicides, which specifically target and kill fungal organisms. Each of these serves a distinct purpose within their respective fields, yet they all share the common characteristic of being lethal to certain organisms. Therefore, the answer points directly to disinfectants, which are utilized primarily in laboratory and healthcare settings for their capability to eradicate unwanted microorganisms on non-living surfaces, ensuring a safe and sterile environment.