THE CELL
CELL COMMUNICATION
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Question
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Proteins that are involved in the regulation of the cell cycle, and that show fluctuations inconcentration during the cell cycle, are called
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kinetochores.
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cyclins.
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centrioles.
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proton pumps.
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Explanation:
Detailed explanation-1: -Cyclins. Cyclins are among the most important core cell cycle regulators.
Detailed explanation-2: -Two groups of proteins, cyclins and cyclin-dependent kinases (Cdks), are responsible for promoting the cell cycle.
Detailed explanation-3: -Cell cycle progression is regulated in part by the sequential activity of various cyclins. The cyclins are regulatory subunits that bind, activate and provide substrate specificity for their catalytic partner serine-threonine kinases, collectively called cyclin-dependent kinases (Cdks) (reviewed in refs.
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