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Metabolism Review 1

MITOSIS DEFINITIONS* 

Centrioles 

  • Tiny protein bodies, found in the cytoplasm (just above nuclear membrane) of animals cells.

Chromosomes

  • Composed of many nucleic acids and proteins.  Long and thin structures that contain genetic information.  Found in the nucleus.  Contains two chromatids joined together by a centromere.

Chromatid

  • Single strands of a chromosome that remain joined together by a centromere.

Centromere

  • Structures that hold a chromatids together.

Chromatin

  • The material found inside of the nuclear membrane.  It is composed of protein and DNA.

Cytokinesis

  • The division of the cell membrane

Asters

  • Greek word for star, centrioles appear like stars in the cytoplasm

Spindle Fibers

  • Protein structures that guide chromosomes during cell division.

 

*Biology. Scarborough, ON: Nelson Canada, 1993.

 

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