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.
Akron Genealogy (in Erie County, NY) USA (603,054) > New York (41,275) > Erie County (1,512) > Akron (16) Note: This page primarily lists records kept at the city level. Additional records are listed on the county and state pages. Akron Cemetery Records. Evergreen Lawn Cemetery Find a Grave Ledge Lawn Cemetery Find a Grave Maple Lawn Cemetery Find a Grave