Answer: C
This membrane protein is a <u>receptor protein.</u> Polytopic membranes cross the membrane for the molecules a couple times. The answer is C.
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Both glycerophospholipids and sphingolipid structures are asymmetrically distributed in the two layers of the phospholipid bilayer. Sphingolipids are membrane lipids that have a ceramide backbone while glycerophospholipid has glycerol present in its membrane lipids. Sphingolipids may or may not be present.
They increase the rate at which nutrients are absorbed.
We find the oldest rock on Earth at the center of continents, called cratons. These have been recycled multiple times.
<h3>What is the name of oldest rock found on Earth ? </h3>
The oldest rock is found in Canada and the name of the rock is bedrock.
The oldest rocks are usually found in the center of continents called as cratons. The reason for it is because it is stable part of lithosphere that has survived multiple of explosions and environmental conditions where as in the production of super continents these cratons have survived the conditions.
Learn more about cratons at :
brainly.com/question/15694782
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