The amounts and types of mRNA molecules in a cell ... proteins that act as key regulators for that phase. Before a cell can progress from one phase of the cell cycle to the next, it must degrade ...

To better understand how the multiciliation cycle worked, the scientists first identified changes in gene expression as the cells differentiated from stem cells into multiciliated cells. “The classic ...

Space-filling models of these molecules ... animal cell plasma membranes. However, cholesterol is not present in bacterial membranes or mitochondrial membranes. Also, cholesterol helps regulate ...