The plasma membrane is composed of a phospholipid bilayer with embedded proteins what is one of the functions of the embedded proteins

Answer and Explanation:

The embedded proteins in membrane allow transportation of ions and molecules in and out of the cell. The molecules are trasnported through the flip-flop motion. They also provide area for attachment of enzymes like transferase and hydrolase which are involved in metabolic activities. There are two different types of trasnmembrane proteins that facilitate passage of molecules across the plasma membrane; carrier proteins and channel proteins. The chains that are available on the plasma membrane include active transport that is driven by ATP hydrolysis, facilitated diffusion and ion channels.

the correct answer would be 6 feet.

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.