The membrane structures that function in active transport are proteins and lipids. Proteins function in active transport as pumps.
<span>bones and footprints preserved in stone are examples of fossils. Fossils hardened animal remains such as shells, bones, and teeth.</span> That is the best i can come up with. Hope it helps any.
A high-interest rate means the opportunity cost to built or buy a house is high it is a possible channel. So when the interest rate is higher, there may be fewer new housing starts. The abstract point-scoring task requires a minimal model that illustrates a plausible causal channel.
A spherically shaped bacteria are known as cocci..
hope this helps.....
Fission reaction in sun..