NEET

Def­i­n­i­tion: The endomem­brane sys­tem includes a group of mem­bra­nous organelles that work togeth­er in a coor­di­nat­ed man­ner to per­form spe­cif­ic […]

Key Con­cept: All organ­isms, no mat­ter how large, begin life as a sin­gle cell. Growth and repro­duc­tion are fun­da­men­tal char­ac­ter­is­tics

Overview: The cell cycle varies in dura­tion depend­ing on the organ­ism and cell type. Human cells: ~24 hours. Yeast cells:

Overview: M Phase (Mito­sis Phase): The most dra­mat­ic peri­od of the cell cycle, involv­ing sig­nif­i­cant reor­ga­ni­za­tion of the cel­l’s com­po­nents.

Overview: Prophase is the first stage of karyoki­ne­sis in mito­sis. It fol­lows the S and G2 phas­es of inter­phase, where

Overview: Metaphase is the sec­ond stage of mito­sis, begin­ning with the dis­in­te­gra­tion of the nuclear enve­lope. By this stage, the

Overview: Anaphase is the stage in mito­sis where the sis­ter chro­matids (now called daugh­ter chro­mo­somes) sep­a­rate and begin mov­ing toward

Overview: Telophase is the con­clud­ing stage of nuclear divi­sion (karyoki­ne­sis) in mito­sis. It involves the reor­ga­ni­za­tion and restora­tion of the

Com­pre­hen­sive Notes on Cell The­o­ry Key Con­tri­bu­tions to Cell The­o­ry Matthias Schlei­den (1838): Ger­man botanist. Stud­ied plants and observed that