The Cell Lecture 3 0.0 / 5 ? Human BiologyLecture 3UniversityNone Created by: saraht83Created on: 01-05-16 15:44 Prokaryotes divide by... fission 1 of 14 Cytokinesis separates one cell into two 2 of 14 Eukaryotes divide by... mitosis or meiosis 3 of 14 Chromosomes in the nucleus, DNA molecules packaged into thread-like structures, not visible unless cell is dividing 4 of 14 Centromere constriction point, divides chromosome into two 'arms' 5 of 14 Short arm p arm 6 of 14 Long arm q arm 7 of 14 Histones proteins, provide energy to compact chromosomal DNA, family of small, positively charged proteins, H1, H2A, H2B, H3 + H4 8 of 14 DNA-protein complex is called... chromatin 9 of 14 DNA negatively charged 10 of 14 Nucleosome basic repeating structural and functional unit of chromatin 11 of 14 Chromatin mix of DNA, histones + other proteins that make up chromosomes, divided between heterochromatin (condensed) + euchromatic (extended) 12 of 14 Functions of chromatin package DNA, strengthen DNA, control gene expression + DNA replication 13 of 14 Transcription and replication require DNA strands to separate for template 14 of 14
Comments
No comments have yet been made