Question

What are cyclins, kinases, and telomeres? What do they do, and what are the differences between them? (Please explain, I’ll give brainliest!)

Answer 1

Answer:

Cyclins are the regulatory subunits of holoenzyme CDK complexes that control progression through cell-cycle checkpoints by phosphorylating and inactivating target substrates. Cyclins drive the events of the cell cycle by partnering with a family of enzymes called the cyclin-dependent kinases (Cdks).

Kinases are a type of enzyme (a protein that speeds up chemical reactions in the body) that adds chemicals called phosphates to other molecules, such as sugars or proteins. This may cause other molecules in the cell to become either active or inactive. Kinases are a part of many cell processes.

Telomeres are DNA-protein structures that form protective caps at the end of eukaryotic chromosomes. They constitute the safeguards of chromosome degradation and are responsible for maintaining genomic integrity.

The key difference between cyclins and kinases is that cyclins are regulatory proteins that have no enzymatic function in the cell cycle, while kinases are catalytic proteins that have an enzymatic function in the cell cycle.

Hope this helps!! Im taking bio right now and its very hard