CELL DIVISION
THE CELL CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Tells the cell when it is ok (or not ok) to divide.
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Gives chemical signals torepair errors prior to mitosis.
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Ensures that no mistakeshave been made prior to cell division.
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All of the above.
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Detailed explanation-1: -Cell cycle regulators control cellular growth through mTORC1 signaling. mTORC1 is a protein complex that senses nutrient, energy and redox status to regulate protein synthesis in diverse biological processes such as cell growth, proliferation, motility and autophagy.
Detailed explanation-2: -The cell cycle is controlled by a number of protein-controlled feedback processes. Two types of proteins involved in the control of the cell cycle are kinases and cyclins. Cyclins activate kinases by binding to them, specifically they activate cyclin-dependent kinases (CDK).
Detailed explanation-3: -Cell cycle regulators are commonly represented by cyclins, CDKs and CDK inhibitors, but can also include some of their substrates, interacting partners, and upstream regulators. These proteins have been well studied at molecular, cellular, and organismal levels in the context of cell proliferation control.
Detailed explanation-4: -Cyclin dependent kinase 20 (CDK20) and p21Cip1/Waf1 are widely recognized as key regulators of cell cycle checkpoints controlling cell proliferation/growth and involving in developing multiple cancers.