An allergic reaction happens when your immune system defends against substances that otherwise wouldn’t pose a threat to your body. Common allergens include pollen, mold, and certain foods. Share on ...

General adaptation syndrome (GAS) describes the three-stage process your body goes through when under stress: alarm, resistance, and exhaustion. Short-term stress during the alarm stage isn’t harmful ...

Reverse transcription polymerase chain reaction (RTPCR) is a technique to detect or quantify RNA. It uses a reverse transcriptase enzyme to convert RNA to DNA, followed by PCR to amplify the DNA.

Thermal means heat. Decomposing is the process of breaking down. Thermal decomposition is a chemical reaction that happens when a compound breaks down when heated. When sodium hydrogencarbonate is ...

Photochemistry is the study of chemical processes that occur because of the absorption of light. The study of photochemical systems that use sunlight to drive important chemical reactions or to ...