Figure 1. Types of movement across membranes. Molecules can diffuse across a. membrane down a concentration gradient without the aid of a protein or the input of. energy. Passive and active transport require membrane transport proteins. Channel. proteins carry out passive transport, but carrier proteins can carry out passive or active. transport.
Akron, Iowa. Akron is a city in Plymouth County, Iowa, United States. The population was 1,486 at the 2010 census.
Summa Akron City and St. Thomas Hospitals is a general medical and surgical hospital in Akron, OH. It performed nearly at the level of nationally ranked U.S. News Best Hospitals in 2 adult specialties. It scored high in patient safety, demonstrating commitment to reducing accidents and medical mistakes.