Answer:
Life expectancy is affected by both genes and environment because; 1) one could have genetic underlying health issues that could cause an untimely demise, and 2) the environment in which they live could have uncontrollable events which may shorten one's life, such as violence, limited access to health care, and pollution.
p16 is a tumour suppressor protein that functions as a cyclin-dependent kinase inhibitor and is required for cell cycle regulation. Because p16 inhibits cyclin-dependent kinases that phosphorylate Rb, it can slow down the cell cycle.
<h3>Tumor suppressor genes encode which type?</h3>
Tumor suppressor genes, also known as anti-oncogenes, encode proteins that transduce negative cell growth regulatory signals such cell cycle arrest and death.
The TP53 gene codes for the production of a protein known as tumour protein p53 (or p53). This protein functions as a tumour suppressor, which means it controls cell division by preventing cells from growing and dividing (proliferating) too quickly or uncontrollably.
Cyclins and cyclin-dependent kinases are two types of proteins that promote the cell cycle.
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Answer:
They keep toxic substances out of the cell
Explanation:
They contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products, that mediate cellular and extracellular activities to pass between organelles
