In response to signals from certain proteins and enzymes, a cell can start to move and shake, leading to contractions that cause it to squeeze, pinch, and eventually divide. As daughter cells follow ...

Just as cities must carefully manage the flow of cars in and out of downtown, cells regulate the movement of molecules into ...

Scientists were able to manipulate cells by changing the location of the light. With this technique, they were able to ...

Vaping during pregnancy is becoming more common, but its impact on early human development is not well understood. A new study by scientists at the University of California, Riverside, now reports ...

and enables cellular movement via filopodia. These dynamic protein strands bend and flex, criss-cross each other, and even engage in tugs of war. But they only work collectively. A single actin ...

Actin filaments are also involved in cytokinesis and cell movement (Figure 3). Intermediate filaments come in several types, but they are generally strong and ropelike. Their functions are ...

Most cell signals are chemical in nature ... whereas similar cells in the ear react to the movement of sound waves. In addition, specialized cells in the human vascular system detect changes ...

This movement is against the concentration gradient so the transport proteins require an energy supply. Energy is provided by the breakdown of ATP inside the cell. This diagram shows molecules ...