One of the four nucleotide bases in RNA, pairing with adenine during RNA synthesis.

A heavy metal element used as a fuel in nuclear reactors and in the production of nuclear weapons, known for its radioactive properties.

A compound produced in the liver from ammonia, excreted by the kidneys as a primary nitrogenous waste product in mammals.

The metabolic pathway that converts ammonia to urea in the liver, detoxifying ammonia and eliminating it through urine.

A type of cellular arrangement, typically referring to a particular structure or configuration in certain organisms.

An unusual or excessive discharge from the ear, often associated with infection.

A laboratory instrument used to separate substances of different densities by spinning them at very high speeds.

A medical imaging technique that uses high-frequency sound waves to create images of the inside of the body.

A type of electromagnetic radiation with wavelengths shorter than visible light but longer than X-rays, commonly used in sterilization and in sun exposure.

Light with wavelengths shorter than visible light, known for its effects on the skin, including sunburn, and its use in sterilization and fluorescence.