A unit of length for DNA or RNA strands equal to 1,000 nucleotide bases.

A unit of energy equal to 1,000 calories, commonly used to measure food energy.

A unit of molecular mass equal to 1,000 daltons (Da), often used for proteins and other macromolecules.

The base unit of mass in the International System of Units (SI), equivalent to 1,000 grams.

A metric unit of length equal to 1,000 meters.

Pain associated with movement or muscular motion.

The scientific study of human or non-human body movement.

A yellowish pigmentation of the skin and eyes due to elevated bilirubin levels in the blood.

An early human fossil, *Homo erectus*, discovered on the island of Java in Indonesia.

The middle section of the small intestine, between the duodenum and ileum, involved in nutrient absorption.