Definition: The part of a chromosome that is the narrowest point, where the spindle fibers attach during cell division.

Example: During cell division, the spindle fibers connect to the centromere to help separate the chromosomes.

Definition: A small part of a cell near the nucleus that helps organize structures called microtubules, which are important for cell shape and movement.

Example: The centrosome plays a crucial role in cell division by organizing the microtubules that separate chromosomes.

Definition: The main part of a vertebra, located in front of the neural arch.

Example: The centrum of the vertebra provides support and structure to the spine.

Definition: The process in evolution where an organism develops a head with concentrated sensory and nervous systems at the front of its body.

Example: Cephalization is an important step in the evolution of many animal species, allowing for better sensory perception and coordination.

Definition: A type of antibiotic that is made by changing the structure of another antibiotic called cephalosporin, and is effective against a wide range of bacteria.

Example: Cephaloridine is often used in hospitals to treat serious infections.

Definition: Connected to a type of star that varies in brightness over a regular period.

Example: Astronomers study cepheid stars to measure distances in the universe.

Definition: A type of star that changes brightness in a regular pattern, which helps astronomers measure distances in space.

Example: Astronomers use cepheids to determine how far away galaxies are from Earth.

Definition: Relating to objects made from clay and other nonmetallic minerals that are hardened by heat, such as pottery or tiles.

Example: The artist created a beautiful ceramic vase for the exhibition.

Definition: A type of material made from clay and other nonmetallic minerals, which is hardened by heat. It is often used to make items like dishes, tiles, and pottery.

Example: The artist created a beautiful vase from ceramic.

Definition: A thick, greasy substance made from wax or fat, often used for medicinal purposes on the skin.

Example: The doctor recommended applying a cerate to the wound to help it heal.

Definition: Describing something that is covered with a waxy or resinous substance, or having a specific type of beak shape.

Example: The cerated beak of the bird helps it to catch slippery fish.

Definition: A type of organic substance found in horns, hooves, nails, and similar structures, which is a key component of certain tissues in animals.

Example: The horse's hoof is made of ceratin, which helps protect its feet.