The cell cycle consists of interphase, mitosis and cytokinesis.(1:33) There are a number of internal checkpoints that regulate a cell's progression through the cell cycle, including cyclins(4:23) and Cdk complexes(5:23). These couple with phosphorylation to activate target proteins throughout the cell cycle.The Question of the Day asks (7:38) Some cells, like neurons, exit the cell cycle prior to the S phase - what phase are they in?Thank you for listening to The APsolute RecAP: Biology Edition!(AP is a registered trademark of the College Board and is not affiliated with The APsolute RecAP. Copyright 2020 - The APsolute RecAP, LLC. All rights reserved.)Website:www.theapsoluterecap.comEMAIL:TheAPsoluteRecAP@gmail.comFollow Us:INSTAGRAMTWITTERFACEBOOKYOUTUBE