Modern Cell Theory contains 4 statements, in addition to the original Cell Theory:
The cell contains hereditary information(DNA) which is passed on from cell to cell during cell division.
All cells are basically the same in chemical composition and metabolic activities.
Modern Cell Theory 3. All basic chemical & physiological functions are carried out inside the cells.(movement, digestion,etc) 4. Cell activity depends on the activities of sub-cellular structures within the cell(organelles, nucleus, plasma membrane)
certain organelles originated as free-living bacteria that were taken inside another cell as endosymbionts . Mitochondria developed from proteobacteria Can replicate itself: BINARY FISSION ENDOSYMBIOSIS
Nucleus * surrounded by a nuclear membrane * only found in EUKARYOTES * contains genetic material (DNA) in the form of chromosomes that controls the activities of the cell * serves as the information and administrative center of the cell
Endoplasmic Reticulum (ER) - a series of interconnecting channels associated with storage, synthesis, and transport of substances within the cell two types: A) rough --the 'ER' studded with ribosomes B) smooth --the 'ER' without any ribosomes
Rough endoplasmic reticulum production and processing of specific proteins at ribosomal sites.