Cell Cycle

Histone

Proteins which make up more than 50% of the chromosomes. The majority of them play a structural role. The five primary types are H1, H2A, H2B, H3, and H4. Also responsible for packaging DNA so it can fit into the nucleus

Nucleosomes

When the DNA double helix is wound in tight intervals around a core of eight histone molecules, it gives the appearance of a string of beads. The beads would be the ___ (add picture to collective notes from textbooks)

Chromatin

When a eukaryotic cell isn’t undergoing cell division, the DNA and associated proteins are located in the ____, which looks like a tangled bunch of threads. Before mitosis, _____ become highly coiled and condensed to easily see the individual chromosomes

Chromosome

Thread-like structures containing genetic information. Most ________ have both heterochromatin and euchromatin compaction levels. A eukaryotic ____ contains a single double helix DNA molecule

Chromatid

A DNA double helix within the chromosome. One of the two identical halves of a chromosome

Centriole

Barrel-shaped organelles found in a centrosome. Only animal cells have ____

Centrosome

The main microtubule-organizing center of the cell. Divides before mitosis begins

Centromere

Region in which the two sister chromatids are attached to each other

Kinetochore

Proteins that develops on either side of the centromere during cell division